oj.uz

답안 #222110

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
222110 2020-04-12T06:48:27 Z NONAME Kisik (COCI19_kisik) C++17
90 / 90
 379 ms 15832 KB 
#include <bits/stdc++.h>
#include <time.h>
//#include <random>
#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);

int n, k;
vector <pii> v;
priority_queue <int> q;

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

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

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

    ll ans = oo * 100ll, sum = 0;

    for (int i = 0; i < n; i++) {
        q.push(v[i].sd);
        sum += v[i].sd;

        if (sz(q) < k)
            continue;

        if (sz(q) > k) {
            sum -= q.top();
            q.pop();
        }

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

    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
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 #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 4 ms 384 KB Output is correct

Subtask #3
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 #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
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 4600 KB Output is correct
2 Correct 268 ms 8704 KB Output is correct
3 Correct 225 ms 11556 KB Output is correct
4 Correct 209 ms 11096 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 182 ms 5216 KB Output is correct
2 Correct 32 ms 1904 KB Output is correct
3 Correct 59 ms 3304 KB Output is correct
4 Correct 173 ms 8164 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 96 ms 4200 KB Output is correct
2 Correct 217 ms 8800 KB Output is correct
3 Correct 166 ms 4712 KB Output is correct
4 Correct 364 ms 15832 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 130 ms 4588 KB Output is correct
2 Correct 379 ms 11348 KB Output is correct
3 Correct 114 ms 4840 KB Output is correct
4 Correct 246 ms 12500 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 286 ms 8676 KB Output is correct
2 Correct 245 ms 9288 KB Output is correct
3 Correct 189 ms 7520 KB Output is correct
4 Correct 112 ms 6240 KB Output is correct