oj.uz

Submission #714029

# Submission time Handle Problem Language Result Execution time Memory
714029 2023-03-23T15:28:09 Z Ahmed57 Schools (IZhO13_school) C++14
100 / 100
 110 ms 15860 KB 
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")

#include <bits/stdc++.h>
using namespace std;
bool comp(pair<int,int>a,pair<int,int>b){
    return (a.first-a.second)>(b.first-b.second);
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int n,s,m;
    cin>>n>>s>>m;
    vector<pair<long long,long long>>v;
    for(int i = 0;i<n;i++){
        long long a,b;
        cin>>a>>b;
        v.push_back({a,b});
    }
    sort(v.begin(),v.end(),comp);
    priority_queue<long long> p1,p2;
    long long sum = 0,sum2 = 0;
    long long pref[n+2] = {0},suf[n+2]= {0};
    for(int i= 1;i<=n;i++){
        p1.push(-v[i-1].first);
        if(p1.size()>s){sum+=p1.top();p1.pop();}
        sum+=v[i-1].first;
        pref[i]=sum;
    }
    for(int i= n;i>=1;i--){
        p2.push(-v[i-1].second);
        if(p2.size()>m){sum2+=p2.top();p2.pop();}
        sum2+=v[i-1].second;
        suf[i]= sum2;
    }
    cout<<endl;
    long long ans  = -1e18;
    for(int i = 0;i<=n;i++){
        ans = max(ans,pref[i]+suf[i+1]);
    }
    cout<<ans<<endl;
}

Compilation message

school.cpp: In function 'int main()':
school.cpp:24:21: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |         if(p1.size()>s){sum+=p1.top();p1.pop();}
      |            ~~~~~~~~~^~
school.cpp:30:21: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |         if(p2.size()>m){sum2+=p2.top();p2.pop();}
      |            ~~~~~~~~~^~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 596 KB Output is correct
10 Correct 2 ms 596 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 2 ms 584 KB Output is correct
13 Correct 13 ms 2252 KB Output is correct
14 Correct 29 ms 4088 KB Output is correct
15 Correct 55 ms 7120 KB Output is correct
16 Correct 70 ms 11396 KB Output is correct
17 Correct 79 ms 12292 KB Output is correct
18 Correct 90 ms 13048 KB Output is correct
19 Correct 95 ms 13952 KB Output is correct
20 Correct 110 ms 15860 KB Output is correct