제출 #1014718

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1014718		whitewind664	Unija (COCI17_unija)	C++17	0 / 100	207 ms	43760 KiB

unija

#include <bits/stdc++.h>

using namespace std;

#define int long long

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<int,int>> pravoagolnik(n);
    for (int i=0;i<n;i++) {
        cin >> pravoagolnik[i].first >> pravoagolnik[i].second;
        pravoagolnik[i].first/=2;
        pravoagolnik[i].second/=2;
    }
    pravoagolnik.push_back({ 0, 100000000 });
    sort(pravoagolnik.begin(), pravoagolnik.end());
    // int rez = pravoagolnik[0].first * pravoagolnik[0].second;
    // for (int i=1;i<n;i++) {
    //     rez += (pravoagolnik[i].first-pravoagolnik[i-1].first) * pravoagolnik[i].second;
    // }
    int rez = 0;
    for (int i = n; i >= 0; i--) {
        rez += (pravoagolnik[i].first - pravoagolnik[i - 1].first) * pravoagolnik[i].second;
    }
    
    cout << 4 * rez << endl;
}

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