제출 #128931

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
128931		Plurm	Cake 3 (JOI19_cake3)	C++17	0 / 100	3 ms	888 KiB

cake3

#include <bits/stdc++.h>
using namespace std;
long long sv[2048][2048];
int main(){
  int n,m;
  scanf("%d%d",&n,&m);
  int v,c;
  vector<pair<int,int> > pieces;
  for(int i = 0; i < n; i++){
    scanf("%d%d",&v,&c);
    pieces.emplace_back(v,c);
  }
  sort(pieces.begin(), pieces.end(), [](pair<int,int> x, pair<int,int> y){
    return x.second < y.second;
  });
  for(int i = 0; i+m-1 < n; i++){
    long long highsum = 0ll;
    multiset<int> ms;
    for(int j = i; j < i+m; j++){
      highsum += 1ll * pieces[j].first;
      ms.insert(pieces[j].first);
    }
    sv[i][i+m-1] = highsum;
    for(int j = i+m; j < n; j++){
      if(pieces[j].first > *ms.begin()){
        highsum -= 1ll * *ms.begin();
        ms.erase(ms.begin());
        ms.insert(pieces[j].first);
        highsum += 1ll * pieces[j].first;
      }
      sv[i][j] = highsum;
    }
  }
  long long ans = -1e18;
  for(int i = 0; i < n; i++){
    for(int j = 0; j < n; j++){
      ans = max(ans, sv[i][j] + 2ll * pieces[i].second - 2ll * pieces[j].second);
    }
  }
  printf("%lld\n",ans);
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

cake3.cpp: In function 'int main()':
cake3.cpp:6:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&n,&m);
   ~~~~~^~~~~~~~~~~~~~
cake3.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&v,&c);
     ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 19
• Subtask 3: 0 / 76