oj.uz

답안 #440585

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
440585 2021-07-02T13:32:58 Z nikolapesic2802 학교 설립 (IZhO13_school) C++14
100 / 100
 383 ms 36476 KB 
#include<bits/stdc++.h>
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define dec(x, y) fixed << setprecision((y)) << (x)
#define xx first
#define yy second
#define srt(v) sort((v).begin(), (v).end())
#define srtr(v) sort((v).rbegin(), (v).rend())
#define pb push_back
#define popb pop_back
#define sz(a) (int)(a).size()
#define len(a) (int)(a).length()
#define mp make_pair
 
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
int n, m, s;
pll x[300010];
set<pll> naja, najb, raz;
ll rez;
int main() {
    ios;
    cin >> n >> m >> s;
    for(int i=0; i<n; ++i) {
        cin >> x[i].xx >> x[i].yy;
    }
    sort(x, x+n, greater<pll>());
    for(int i=0; i<m; ++i) {
        rez+=x[i].xx;
        raz.insert({x[i].yy-x[i].xx, (ll)i});
    }
    for(int i=m; i<n; ++i) {
        naja.insert({x[i].xx, (ll)i});
        najb.insert({x[i].yy, (ll)i});
    }
    for(int kk=0;kk<s;kk++){
    	
        bool uzeo1=0, uzeo2=0;
        pll pr, dr, tr;
        if(!najb.empty()) {
            pr=*prev(najb.end());
            uzeo1=1;
        }
        if(!raz.empty() && !naja.empty()) {
            dr=*prev(raz.end());
            tr=*prev(naja.end());
            uzeo2=1;
        }
        if(!uzeo2) {
            rez+=pr.xx;
            najb.erase(prev(najb.end()));
            naja.erase({x[pr.yy].xx, pr.yy});
        }
        else if(!uzeo1) {
            rez+=dr.xx+tr.xx;
            if(!raz.empty()) raz.erase(prev(raz.end()));
            if(!naja.empty()) naja.erase(prev(naja.end()));
            najb.erase({x[tr.yy].yy,tr.yy});
            raz.insert({x[tr.yy].yy-x[tr.yy].xx, tr.yy});
        }
        else if(pr.xx>dr.xx+tr.xx) {
            rez+=pr.xx;
            if(!najb.empty()) najb.erase(prev(najb.end()));
            auto it=naja.find({x[pr.yy].xx, pr.yy});
            if(it!=naja.end() && !naja.empty()) naja.erase(it);
        }
        else{
            rez+=dr.xx+tr.xx;
            if(!raz.empty()) raz.erase(prev(raz.end()));
            if(!naja.empty()) naja.erase(prev(naja.end()));
            najb.erase({x[tr.yy].yy,tr.yy});
            raz.insert({x[tr.yy].yy-x[tr.yy].xx, tr.yy});
        }
    }
    cout << rez;
    return 0;
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 4 ms 844 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 5 ms 972 KB Output is correct
12 Correct 5 ms 972 KB Output is correct
13 Correct 23 ms 3300 KB Output is correct
14 Correct 94 ms 10760 KB Output is correct
15 Correct 231 ms 22616 KB Output is correct
16 Correct 365 ms 24260 KB Output is correct
17 Correct 304 ms 25832 KB Output is correct
18 Correct 290 ms 28316 KB Output is correct
19 Correct 383 ms 30984 KB Output is correct
20 Correct 381 ms 36476 KB Output is correct