View Compilation Error

0_0_31148478_25945.c:5:2: error: expected identifier or '(' before 'while'
  while(scanf("%d%d",&n,&m)!=EOF)
  ^
0_0_31148478_25945.c:55:2: error: expected identifier or '(' before 'return'
  return 0;
  ^
0_0_31148478_25945.c:56:1: error: expected identifier or '(' before '}' token
 } 
 ^