oj.uz

Submission #671901

# Submission time Handle Problem Language Result Execution time Memory
671901 2022-12-14T08:32:57 Z Alihan_8 Schools (IZhO13_school) C++17
25 / 100
 112 ms 12916 KB 
#include <bits/stdc++.h>
// include <ext/pb_ds/assoc_container.hpp>
// include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
// define ordered_set tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
#define mpr make_pair
#define ln '\n'
void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
#define int long long
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, a, b; cin >> n >> a >> b;
    vector <pair<int,int>> p(n);
    for ( auto &[l, r]: p ) cin >> l >> r;
    vector <int> pos(n);
    iota(all(pos), 0);
    sort(all(pos), [&](int &x, int &y){
         return p[x].first+p[y].second > p[y].first+p[x].second;
    });
    int cnt = 0;
    priority_queue <int> q;
    for ( int i = 0; i < a; i++ ) cnt += p[pos[i]].first;
    for ( int i = a; i < n; i++ ) q.push(p[pos[i]].second);
    int _b = b;
    while ( b-- ){
        cnt += q.top(); q.pop();
    } b = _b;
    int Mx = cnt; cnt = 0;
    while ( !q.empty() ) q.pop();
    for ( int i = 0; i < b; i++ ) cnt += p[pos[i]].second;
    for ( int i = b; i < n; i++ ) q.push(p[pos[i]].first);
    while ( a-- ){
        cnt += q.top(); q.pop();
    }
    cout << max(cnt, Mx);

    cout << '\n';
}

Compilation message

school.cpp: In function 'void IO(std::string)':
school.cpp:11:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:11:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Incorrect 1 ms 212 KB Output isn't correct
5 Incorrect 0 ms 212 KB Output isn't correct
6 Incorrect 1 ms 212 KB Output isn't correct
7 Incorrect 2 ms 476 KB Output isn't correct
8 Correct 2 ms 468 KB Output is correct
9 Incorrect 2 ms 468 KB Output isn't correct
10 Incorrect 2 ms 468 KB Output isn't correct
11 Incorrect 2 ms 468 KB Output isn't correct
12 Incorrect 2 ms 596 KB Output isn't correct
13 Incorrect 14 ms 2136 KB Output isn't correct
14 Incorrect 31 ms 4168 KB Output isn't correct
15 Incorrect 63 ms 7964 KB Output isn't correct
16 Correct 70 ms 8616 KB Output is correct
17 Incorrect 78 ms 10180 KB Output isn't correct
18 Incorrect 87 ms 10972 KB Output isn't correct
19 Incorrect 91 ms 11564 KB Output isn't correct
20 Incorrect 112 ms 12916 KB Output isn't correct