提出 #512262

---

ソースコード 拡げる

#include <cstdio>
#include <algorithm>
#include <functional>
using namespace std;
int main() {
  int n;
  int t;
  scanf("%d %d", &n, &t);
  int a;
  int b;
  int ds[n];
  int s = 0;
  for(int i=0; i<n; i++) {
    scanf("%d %d", &a, &b);
    ds[i] = a - b;
    s += a;
  }
  sort(ds, ds+n, greater<int>());

  s -= t;
  int c = 0;
  for(int i=0; i<n; i++) {
    if( s <= 0 ) break;
    s -= ds[i];
    c++;
  }
  if( s <= 0 )
    printf("%d\n", c);
  else
    printf("-1\n");

  return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &t);
                         ^
./Main.cpp:14:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &a, &b);
                           ^

ジャッジ結果