20250510

# a = int(input())
# b = []
# i = 0
# j = a//2
# for k in range(a) :
#     b.append([0]*a)
#
# for k in range(1,a*a+1) :
#     b[i][j] = k
#     if k%a==0 :
#         i+=1
#         continue
#     if i==0 :
#         i=a-1
#     else :
#         i-=1
#     if j==a-1 :
#         j=0
#     else :
#         j+=1
# for k in range(a) :
#     for l in range(a) :
#         print(b[k][l], end = ' ')
#     print()

# a = int(input())
# b = []
# i=a-1
# j=0
# dir=0
# for k in range(a) :
#     b.append([0]*a)
# 
# k=1
# while True :
#     b[i][j]=k
#     k+=1
#     if i==a-1 and j==a-1 :
#         break
# 
#     if dir==0 :
#         if j==a-1 :
#             dir=1
#             i+=1
#         else :
#             i-=1
#             j+=1
# 
#     elif dir==1 :
#         if i==a-1 :
#             dir=0
#             j+=1
#         else :
#             i+=1
#             j-=1
# for k in range(a) :
#     for l in range(a) :
#         print(b[k][l], end = ' ')
#     print()

a,b = map(int,input().split())
c = int(input())