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답안 #222123

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
222123 2020-04-12T07:08:25 Z Vimmer Kisik (COCI19_kisik) C++14
90 / 90
 1368 ms 75964 KB 
#include <bits/stdc++.h>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 100005
#define MOD ll(998244353)

using namespace std;

typedef long long ll;

typedef long double ld;


int main()
{

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, k;

    cin >> n >> k;

    pair <ll, ll> a[n];

    for (int i = 0; i < n; i++) cin >> a[i].S >> a[i].F;

    sort(a, a + n);

    ll sum = 0, mx = 0, ans = 1e18;

    for (int i = 0; i < n; i++) swap(a[i].F, a[i].S);

    set <pair <ll, int> > se; se.clear();

    for (int i = 0; i < k; i++) {sum += a[i].F; mx = a[i].S; se.insert({a[i].F, i}); }

    ans = sum * mx;

    for (int i = k; i < n; i++)
    {
        if ((*se.rbegin()).F <= a[i].F) continue;

        pair <ll, int> nm = *se.rbegin();

        se.erase(nm);

        ll len = sum + a[i].F - nm.F;

        ll hg = a[i].S;

        sum = len; mx = hg; se.insert({a[i].F, i});

        ans = min(ans, sum * mx);
    }

    cout << ans << endl;
}

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 4 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 5 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 104 ms 4984 KB Output is correct
2 Correct 626 ms 30200 KB Output is correct
3 Correct 719 ms 47224 KB Output is correct
4 Correct 651 ms 44104 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 340 ms 15456 KB Output is correct
2 Correct 58 ms 6904 KB Output is correct
3 Correct 149 ms 12408 KB Output is correct
4 Correct 610 ms 38756 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 244 ms 16888 KB Output is correct
2 Correct 201 ms 10188 KB Output is correct
3 Correct 236 ms 11656 KB Output is correct
4 Correct 1368 ms 75964 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 283 ms 16120 KB Output is correct
2 Correct 1029 ms 45920 KB Output is correct
3 Correct 260 ms 17276 KB Output is correct
4 Correct 869 ms 53860 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 431 ms 17904 KB Output is correct
2 Correct 709 ms 40568 KB Output is correct
3 Correct 509 ms 28384 KB Output is correct
4 Correct 326 ms 25848 KB Output is correct