View Compilation Error

0_0_36511052_4169.cpp:5:1: error: expected ',' or ';' before 'int'
 int n,m;
 ^
0_0_36511052_4169.cpp: In function 'int main()':
0_0_36511052_4169.cpp:11:23: error: 'n' was not declared in this scope
  while((scanf("%d%d",&n,&m)!=EOF))
                       ^
0_0_36511052_4169.cpp:11:26: error: 'm' was not declared in this scope
  while((scanf("%d%d",&n,&m)!=EOF))
                          ^
0_0_36511052_4169.cpp:31:6: error: 'ma' was not declared in this scope
      ma[i][j]=min(ma[i][j],ma[i][k]+ma[k][j]);
      ^
0_0_36511052_4169.cpp:32:6: error: 'ma' was not declared in this scope
   if(ma[s][t]!=maxn)
      ^