1470
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int sum = 1;
int sum2 = 1;
int [][]arr = new int[n][n];
int [][]arr2 = new int[n][n];
for(int j=0; j<n; j++)
{
for(int i=0; i<n; i++)
{
arr[i][j] = sum;
sum++;
}
}
for(int j=0; j<n; j++)
{
for(int i=n-1; i>=0; i--)
{
arr2[i][j] = sum2;
sum2++;
}
}
for(int i=0; i<n; i++ )
{
for(int j=0; j<n; j++)
{
if(j%2!=0 && j!=0 || j==1)
{
System.out.print(arr2[i][j]+" ");
}
else
{
System.out.print(arr[i][j]+" ");
}
}
System.out.println();
}
}
}
나느 IQ150이 아니여서 이문제를 더이상 못푼다
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int x = 0;
int [][]arr = new int[n][n];
for(int i= 0 ; i<arr.length; i++)
{
arr[i] = new int[i+1];
}
for(int i=0; i<n; i++)
{
for(int j=1; j<i; j++)
{
arr[i][j] = arr[i][j-1]-arr[i-1][j-1];
}
}
for(int i=0; i<n; i++)
{
for(int j=0; j<i+1; j++)
{
System.out.print(arr[i][j] + " ");
}
System.out.println();
}
}
}
*/
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int [][]arr = new int[10][10];
int x = 0;
for(int i=0; i<arr.length; i++)
{
arr[i]=new int[i+1];
}
for(int i=1; i<=11; i++)
{
for(int j=1; j<=11; j++)
{
if(arr[11][j]==1)
{
if(arr[i][j]>0)
{
System.out.print("crash");
}
else if(arr[i][j]<0)
{
System.out.print("fall");
}
else if(arr[i][j]==0)
{
x++;
if(x==10)
{
System.out.print("safe");
}
}
}
}
}
}
}