View Compilation Error

0_0_24268276_20055.cpp: In function 'int main()':
0_0_24268276_20055.cpp:40:2: error: expected initializer before 'while'
  while (~scanf("%d%d", &n, &m))
  ^
0_0_24268276_20055.cpp:102:1: error: expected '}' at end of input
 }
 ^