oj.uz

답안 #222102

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
222102 2020-04-12T06:38:42 Z NONAME Kisik (COCI19_kisik) C++17
20 / 90
 635 ms 25152 KB 
#include <bits/stdc++.h>
#include <time.h>
//#include <random>
//#ifndef _LOCAL
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#endif
#define sz(x) int(x.size())
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#define N 100500
#define oo ll(1e16)
#define pii pair <int, int>
#define pll pair <ll, ll>
#define ft first
#define sd second
#define pb push_back
#define ppb pop_back
#define el '\n'
#define elf endl
#define base ll(1e9 + 7)
#define re return
#define nins 4294967295
using namespace std;
typedef long long ll;
typedef long double ld;

//mt19937 rnd(0);

ll n, k;
vector <pll> v;
multiset <ll> s;

bool cmp(pll x, pll y) { return x.sd == y.sd ? x.ft < y.ft : x.sd < y.sd; }

void solve() {
    cin >> n >> k;
    for (int i = 0; i < n; i++) {
        ll x, y; cin >> x >> y;

        v.pb({x, y});
    }

    sort(v.begin(), v.end(), cmp);

    ll ans = oo, sum = 0;

    for (int i = 0; i < n; i++) {
        if (sz(s) < k) {
            s.insert(v[i].ft);
            sum += v[i].ft;
            continue;
        }

        s.insert(v[i].ft);
        sum += v[i].ft;

        multiset <ll> :: iterator it = s.end();
        it--;
        s.erase(it);
        sum -= *it;

        ans = min(ans, sum * v[i].sd);
    }

    ans = min(ans, sum * v.back().sd);

    cout << ans;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifdef _LOCAL
        in("input.txt");

        int t = 1;
//        cin >> t;
        for (int i = 1; i <= t; i++) {
            cout << "Test #" << i << elf;

            clock_t start_time = clock();

            solve();

            cerr.precision(4); cerr << fixed;
            cerr << elf;
            cerr << "Time :: " << ld(clock() - start_time) / CLOCKS_PER_SEC << elf;

            cout << elf;
        }
    #else
        int t = 1;
//        cin >> t;

        while (t--) {
            solve();
            cout << el;
        }
    #endif
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Incorrect 5 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct

Subtask #5
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 139 ms 8800 KB Output is correct
2 Incorrect 635 ms 25152 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 306 ms 13472 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 225 ms 13792 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 267 ms 13524 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 393 ms 16976 KB Output isn't correct
2 Halted 0 ms 0 KB -