/*#include<stdio.h> int main() { int arr[1000],i,n,j; scanf("%d",&n); for (i=0; i<n; i++) { scanf("%d",&arr[i]); } for (i=0; i<n; i++) { for (j=i; j<i+n; j++) { printf("%d ", arr[j%n]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[1000], n,j,i; scanf("%d", &n); for (i=1; i<=n; i++) { scanf("%d", &arr[i]); } for (i=1; i<=n; i++) { printf("%d: ",i); for (j=1; j<=n; j++) { if (i!=j) { if (arr[i]<arr[j]) { printf("< "); } else if (arr[i]==arr[j]) { printf("= "); } else { printf("> "); } } } printf("\n"); } return 0; } */ /*#include<stdio.h> int main() { int count,n,m,i,j,k,arr[10000000]={0}; scanf("%d",&n); for (i=1; i<=n; i++) { scanf("%d",&k); arr[k]=1; } scanf("%d",&m); for (j=1; j<=m; j++) { scanf("%d",&k); printf("%d ",arr[k]); } return 0; } */ /*#include<stdio.h> int main() { int arr[101][101],i,j,n,k=1; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { arr[i][j]=k; k++; } } for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("%d ", arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101], i,j,k=1,n; scanf("%d", &n); for (i=1; i<=n; i++) { for (j=n; j>=1; j--) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101],i,j,k=1,n; scanf("%d", &n); for (j=1; j<=n; j++) { for (i=1; i<=n; i++) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101],i,j,k=1,n; scanf("%d",&n); for (j=1; j<=n; j++) { for (i=n; i>=1; i--) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("%d ", arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101],k=1,n,m,i,j; scanf("%d %d",&n,&m); for (i=n; i>=1; i--) { for (j=m; j>=1; j--) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=m; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101], k=1, n,m,i,j; scanf("%d %d",&n,&m); for (i=n; i>=1; i--) { for (j=1; j<=m; j++) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=m; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101],k=1,n,m,i,j; scanf("%d %d",&n,&m); for (j=m; j>=1; j--) { for (i=n; i>=1; i--) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=m; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ /*#include<stdio.h> int main() { int arr[101][101],k=1,n,m,i,j; scanf("%d %d",&n,&m); for (j=m; j>=1; j--) { for (i=1; i<=n; i++) { arr[i][j]=k++; } } for (i=1; i<=n; i++) { for (j=1; j<=m; j++) { printf("%d ",arr[i][j]); } printf("\n"); } } */ #include<stdio.h> int main() { int arr[101][101],k=1,n,i,j; scanf("%d",&n); for (i=1; i<=n; i++) { if (i%2==1) { for (j=1; j<=n; j++) { arr[i][j]=k++; } } else if (i%2==0) { for (j=n; j>=1; j--) { arr[i][j]=k++; } } } for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("%d ", arr[i][j]); } printf("\n"); } }

/*#include <stdio.h> int main() { int i,j,n; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=i; j++) { printf("*"); } printf("\n"); } } */ /*#include<stdio.h> int main() { int i,j,n; scanf("%d",&n); for (i=n; i>=1; i--) { for (j=1; j<=i; j++) { printf("*"); }printf("\n"); } } */ /*#include<stdio.h> int main() { int i,j,n; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=i-1; j++) { printf(" "); } for (j=i; j<=n; j++) { printf("*"); } printf("\n"); } return 0; } */ /*#include<stdio.h> int main() { int n,i,j; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=i; j++) { printf("*"); } printf("\n"); } for (i=n-1; i>=1; i--) { for (j=1; j<=i; j++) { printf("*"); } printf("\n"); } } */ /*#include<stdio.h> int main() { int n,i,j; scanf("%d",&n); for (i=1; i<=n/2; i--) { for (j=1; j<=i; j++) { printf(" "); } for (i=1; i<=n/2+1; i++) { for (j=1; j<=i; j++) { printf("*"); } } printf("\n"); } */ /*#include<stdio.h> int main() { int i,j,n; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=i-1; j++) { printf(" "); } printf("**\n"); } } */ /*#include<stdio.h> int main() { int i,n,j, sum=0; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=i; j++) { sum+=j; } } printf("%d",sum); } */ /*#include<stdio.h> int main() { int i,j,a,b; scanf("%d %d",&a, &b); for (i=1; i<=a; i++) { for (j=1; j<=a; j++) { if (i==1 || i==a || j==1 || j==a || (i+j-1)%b==0) { printf("*"); } else { printf(" "); } }printf("\n"); } } */ /*#include<stdio.h> int main() { int n,i; scanf("%d",&n); for (i=1; i<n; i++) { if (i<=6 && (n-i)<=6) { printf("%d %d\n", i, n-i); } } } */ /*#include<stdio.h> int main() { int n,a[1001],i; scanf("%d",&n); for (i=1; i<=n; i++) { scanf("%d",&a[i]); } for (i=n; i>=1; i--) { printf("%d ",a[i]); } } */

/*#include<stdio.h> int main() { int a,i,n=0; scanf("%d",&a); for (i=1; i<=a; i++) { if (a%i==0) { n++; } } if (n<=2) { printf("prime"); } else { printf("not prime"); } } */ /*#include<stdio.h> int main() { int n,k,i,s=1; scanf("%d %d",&n,&k); for(i=1; i<=k; i++) { s=s*n; // s*=n; } printf("%d",s); } */ /*#include<stdio.h> int main() { int n,i,a=1; scanf("%d",&n); for (i=1; i<=n; i++) { a=a*i; } printf("%d",a); } */ /*#include<stdio.h> int main() { long long int a; int m,d,n,i; scanf("%lld %d %d %d",&a,&m,&d,&n); for (i=1; i<n; i++) { a=a*m+d; } printf("%lld",a); } */ /*#include<stdio.h> int main() { int n,i,k; scanf("%d",&n); for (i=1; i<=n; i++) { scanf("%d",&k); if (i==1) { printf("%d ",k); } if (i==n/2+1) { printf("%d ",k); } if (i==n) { printf("%d ",k); } } } */ /*#include<stdio.h> int main() { int n,i,cnt=0; scanf("%d",&n); for (i=1; i<=13; i++) { n=n/10; if(n>0){ cnt=cnt+1; } } printf("%d",cnt+1); } */ /*#include<stdio.h> int main() { int n,i,j; scanf("%d",&n); for(i=1; i<=n; i++) { for (j=1; j<=n; j++) { printf("*"); } printf("\n"); } } */ /*#include<stdio.h> int main() { int n,i,j; scanf("%d",&n); for (i=1; i<=n; i++) { printf("*"); } printf("\n"); //////////////////////////// for (i=1; i<=n-2; i++) { printf("*"); for (j=1; j<=n-2; j++) { printf(" "); } printf("*\n"); } /////////////////////////////// for (i=1; i<=n; i++) { printf("*"); } } */ #include<stdio.h> int main() { int n,i,j; scanf("%d",&n); for (i=1; i<=n; i++) { for (j=1; j<=n; j++) { if (i==1||i==n||j==1||j==n||i==j||i+j==n+1) { printf("*"); } else { printf(" "); } } printf("\n"); } }

/*#include <stdio.h> #include <stdlib.h> int main() { printf("Hello world!\n"); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); printf("%d",a>b?a:b); return 0; } */ /*#include<stdio.h> int main() { int a,b,c; scanf("%d %d %d",&a,&b,&c); printf("%d",(a>b?b:a)<c?(a<b?a:b):c); } */ /*#include<stdio.h> int main() { int a,b,c; scanf("%d %d %d",&a,&b,&c); printf("%.2f",(float)(a+b+c)/3); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); printf("%d",a%b); } */ /*#include<stdio.h> int main() { int a,b,c; scanf("%d",&a); b=a/60; c=a%60; printf("%d %d",b,c); }*/ /*#include<stdio.h> int main() { int i,n,a,sum=0; scanf("%d",&n); for (i=1; i<=n; i++){ scanf("%d",&a); sum+=a; } printf("%d",sum); } */ /*#include<stdio.h> int main() { int i,n,a,sum=0; scanf("%d", &n); for (i=1; i<=n; i++) { scanf("%d",&a); if (a%5==0) { sum+=a; } } printf("%d",sum); } */ /*#include<stdio.h> int main() { int n,i,sum=0; scanf("%d",&n); for (i=1; i<=n;i++) { if (i%2==0) { sum+=i; } } printf("%d",sum); } */ /*#include<stdio.h> int main() { int n,i,a,cnt=0; scanf("%d",&n); for (i=1; i<=n; i++) { scanf("%d",&a); if (a%2==0) { cnt+=1; } } printf("%d",cnt); return 0; } */ /*#include<stdio.h> int main() { int a,b,c,n,i; scanf("%d %d %d %d",&a,&b,&c,&n); for (i=1; i<n; i++) { a=a*b+c; } printf("%d",a); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); if (a%2==0) { a=a*5; } else if (a%2==1) { a=(a+1)/2; } if(b%2==0) { b=b*5; } else if(b%2==1) { b=(b+1)/2; } printf("%d", a+b); } */

/*#include <stdio.h> #include <stdlib.h> int main() { printf("Hello world!\n"); return 0; } */ /*#include<stdio.h> int main() { double a,b,c,d; scanf ("%lf %lf",&a, &b); c = (a-100)*0.9; d = (b-c)*100/c; if (d<=10) { printf("정상"); } else if(d<=20) { printf("과체중"); } else { printf("비만"); } }*/ /*#include<stdio.h> int main() { double a,b,c,d,e; scanf("%lf %lf",&a,&b); if (a<150) { c = (a-100); } else if(a<160) { c = ((a-150)/2+50); } else { c = ((a-100)*0.9); } c = (b-c)*100/c; if(c<=10) { printf("정상"); } else if(c<=20) { printf("과체중"); } else { printf("비만"); } return 0; } */ /*&#include<stdio.h> int main() { int n, i; scanf("%d", &n); for(i=0; i<n; i++) { printf("%d ", i); } }*/ /*#include<stdio.h> int main() { int i; for (i=1; i<=100; i++) { printf("%d ",i); } }*/ /*#include<stdio.h> int main() { int i,n; scanf("%d",&n); for (i=1; i<=n; i++) { printf("%d ",i); } } */ /*#include<stdio.h> int main() { int a,b,i; scanf("%d %d",&a,&b); if (a<b) { for (i=a; i<=b; i++){ printf("%d ",i); } } else if(a>=b) { for (i=b; i<=a; i++) { printf("%d ",i); } } }*/ /*#include<stdio.h> int main() {char a,b,i; scanf("%c %c",&a,&b); for (i=a; i<=b; i++) { printf("%c ",i); } }*/ #include<stdio.h> int main() { int i,n,sum; scanf("%d",&n); sum = 0; for (i=1; i<=n; i++){ sum=sum+i; }printf("%d",sum); }

/*#include <stdio.h> #include <stdlib.h> int main() { printf("Hello world!\n"); return 0; }*/ /*#include<stdio.h> int main() { int v,a,n; scanf("%d %d %d",&v,&a,&n); if ((v+a+n)/100%10%2==0) { printf("대박"); } else { printf("그럭저럭"); } }*/ /*#include<stdio.h> int main(){ int n; scanf("%d", &n); switch(n) { case 1: printf("111"); break; case 2: printf("222"); break; case 3: printf("333"); case 4: printf("444"); break; case 5: case 6: case 7: printf("7"); break; default: printf("000"); } } */ /*#include<stdio.h> int main() { int a; scanf("%d", &a); switch (a/10) { case 6: printf("D"); break; case 7: printf("C"); break; case 8: printf("B"); break; case 9: case 10: printf("A"); break; default: printf("F"); break; } return 0; } */ /*#include<stdio.h> int main() { int v,a,n,g; scanf("%d %d %d %d",&v,&a,&n,&g); switch (v+a+n+g) { case 1: printf("도"); break; case 2: printf("개"); break; case 3: printf("걸"); break; case 4: printf("윷"); break; case 0: printf("모"); break; } return 0; }*/ /*#include<stdio.h> int main() {int v; scanf("%d",&v); if (v==12||v==13||v==11) printf("%dth",v); else if (v%10==1) printf("%dst",v); else if (v%10==3) printf("%drd",v); else if (v%10==2) printf("%dnd",v); else printf ("%dth",v); }*/ /*#include<stdio.h> int main() { int v,a,n; scanf("%d %d %d",&v,&a,&n); if (v<=170){ printf("CRASH %d",v); } else if (a<=170){ printf("CRASH %d",a); } else if(n<=170){ printf("CRASH %d",n); } else { printf("PASS"); } }*/

/*#include <stdio.h> #include <stdlib.h> int main() { printf("Hello world!\n"); return 0; } */ /* #include <stdio.h> int main () { int a, b; scanf("%d %d", &a, &b); printf("%d+%d=%d\n", a, b, a+b); printf("%d-%d=%d\n", a, b, a-b); printf("%d*%d=%d\n", a, b, a*b); printf("%d/%d=%d\n", a, b, a/b); return 0; } */ /*#include<stdio.h> int main() { double a; printf("%lf", (double)9/5); scanf("%lf", &a); printf("%.3lf", a); } */ /*#include<stdio.h> int main () { double a; scanf("%lf", &a); printf("%.3lf", (double)9/5*a+32); return 0; } */ /*#include<stdio.h> int main () { double a, b; scanf("%lf %lf", &a,&b); printf("%.1lf", (double)a*b/2); return 0; } */ /*#include<stdio.h> int main() { int a; scanf("%d", &a); printf("%d", ~a); return 0; } */ /*#include<stdio.h> int main () { int a, b; scanf("%d %d", &a, &b); printf("%d", a&b); return 0; } */ /*#include<stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); printf("%d", a|b); return 0; } */ /*#include<stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); printf("%d", a^b); return 0; } */ /*#include<stdio.h> int main() { int n; scanf("%d", &n); if(n > 60) { } else if(n > 50) { } else if(n > 40) { } else { } } */ /*#include<stdio.h> int main() { int a; scanf("%d", &a); if (a<10) { printf("small"); } else { } return 0; }; */ /*#include<stdio.h> int main() { int a; scanf("%d", &a); if (a<10) { printf("small"); } else { printf("big"); } return 0; } */ /*#include<stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); if (a>b) { printf(">"); } else if (a<b) { printf("<"); } else { printf("="); } } */ /* #include<stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); if (a>b) { printf("%d", a-b); } else { printf("%d", b-a); } } */ /*#include<stdio.h> int main() { int n; scanf("%d", &n); if(n%4==0) { printf("JJACKSU"); } else { printf("HOLLSU"); } } */ #include<stdio.h> int main() { int v; scanf("%d", &v); if(v%7==0) { printf("multiple"); } else { printf("not multiple"); } }

/*#include <stdio.h> int main() { long long int a, b; scanf ("%lld %lld", &a, &b); printf("%lld", a+b); return 0; } */ /*#include <stdio.h> int main() { long long int a, b; scanf ("%lld %lld", &a, &b); printf ("%lld", a+b); return 0; } */ /*#include <stdio.h> int main() { int a; scanf("%d", &a ); printf("%d", -a); return 0; } */ /*#include<stdio.h> int main() { char a; scanf ("%c",&a); printf("%c", a+1); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); printf("%d",a/b); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); printf("%d",a%b); return 0; } */ /*#include<stdio.h> int main() { long long int a; scanf("%lld",&a); printf("%lld",a+1); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a,&b); printf("%d\n", a+b); printf("%d\n", a-b); printf("%d\n", a*b); printf("%d\n", a/b); printf("%d\n", a%b); printf("%.2lf\n", (double)a/b); return 0; } */ /* #include<stdio.h> int main() { int a,b,c; scanf("%d%d%d", &a,&b,&c); printf("%d\n", a+b+c); printf("%.1lf\n",(double)(a+b+c)/3); return 0; } */ /* #include<stdio.h> int main() { int a = 12; printf("%3d:::\n", a); printf("%03d:::\n", a); printf("%-3d:::", a); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a>b); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a==b); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a<=b); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a!=b); return 0; }*/ /*#include<stdio.h> int main() { int a; scanf("%d", &a); printf("%d", !a); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a&&b); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", a||b); } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d", &a, &b); printf("%d", !(a&&b)&&(a||b)); } */

/* #include <stdio.h> #include <math.h> // intager int main() { printf("Hello"); return 0; } */ /*#include<stdio.h> int main() { printf("Hello World"); return 0; }*/ /*#include<stdio.h> int main() { printf("Hello\nWorld"); return 0; } */ /*#include<stdio.h> int main() { printf("\'Hello\'"); return 0; }*/ /*#include<stdio.h> int main() { printf("\"Hello World\""); } */ /*#include<stdio.h> int main() { printf("\"!@#$%%^&*()\""); return 0; } */ /* #include<stdio.h> int main() { printf("\"C:\\Download\\hello.cpp\""); return 0; } */ /* #include<stdio.h> int main() { int a, b; scanf("%d %d", &a, &b); printf("%d", a+b); return 0; } */ /*#include<stdio.h> int main() { int n; scanf("%d",&n); printf("%d",n); return 0; } */ /*#include<stdio.h> int main() { char x; scanf("%c",&x); printf("%c",x+1); } */ /*#include<stdio.h> int main() { float x; scanf("%f",&x); printf("%f",x); return 0; } */ /*#include<stdio.h> int main() { int a,b; scanf("%d %d",&a,&b); printf("%d %d",a,b); } */ /*#include<stdio.h> int main() { char a,b; scanf ("%c %c",&a,&b); printf("%c %c",b,a); } */ #include<stdio.h> int main() { float a; scanf("%f",&a); printf("%.2f",a); }