Submission #524729

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Source Code Expand

#include <stdio.h>

#define N 300000
#define M 100000

int main()
{
  int n,m,i,j;
  int from[M];
  int to[M];
  int room[N];
  int answer[M];
  int flag;
  int count = 0;

  scanf("%d %d", &n, &m);
  for(i=0;i<n;i++){
    room[i]=0;
  }
  
  for(i=0;i<m;i++){
    scanf("%d %d", &from[i], &to[i]);
    for(j=from[i]-1;j<to[i];j++){
      room[j]++;
    }
  }
  for(i=0;i<m;i++){
    flag = 1;
    for(j=from[i]-1;j<to[i];j++){
      if(room[j]<=1){
        flag = 0;
        break;
      }
    }
    if(flag > 0){
      answer[count] = i+1;
      count++;
    }
  }
  
  printf("%d\n", count);
  for(i=0;i<count;i++){
    printf("%d\n", answer[i]);
  }
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:16:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &m);
   ^
./Main.c:22:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &from[i], &to[i]);
     ^

Judge Result