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답안 #200093

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
200093 2020-02-05T10:19:50 Z Saboon Kisik (COCI19_kisik) C++14
90 / 90
 1585 ms 65676 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

const int maxn = 1e6 + 10;
const ll inf = 1e18;

pair<int, int> a[maxn];

int main(){
	ios_base::sync_with_stdio(false);
	int n, k;
	cin >> n >> k;
	for (int i = 0; i < n; i++)
		cin >> a[i].second >> a[i].first;
	sort(a, a + n);
	multiset<int> s;
	ll answer = inf;
	ll sum = 0;
	for (int i = 0; i < n; i++){
		s.insert(a[i].second);
		sum += a[i].second;
		if (s.size() > k){
			auto it = s.end();
			it --;
			sum -= *it;
			s.erase(it);
		}
		if (s.size() == k)
			answer = min(answer, 1ll * sum * a[i].first);
	}
	cout << answer << endl;
}

Compilation message

kisik.cpp: In function 'int main()':
kisik.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (s.size() > k){
       ~~~~~~~~~^~~
kisik.cpp:30:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (s.size() == k)
       ~~~~~~~~~^~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 5 ms 380 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 392 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 508 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 130 ms 6664 KB Output is correct
2 Correct 715 ms 28428 KB Output is correct
3 Correct 839 ms 40944 KB Output is correct
4 Correct 740 ms 37976 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 337 ms 15720 KB Output is correct
2 Correct 56 ms 5624 KB Output is correct
3 Correct 137 ms 10580 KB Output is correct
4 Correct 597 ms 33192 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 244 ms 15228 KB Output is correct
2 Correct 238 ms 12408 KB Output is correct
3 Correct 242 ms 11940 KB Output is correct
4 Correct 1585 ms 65676 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 298 ms 15048 KB Output is correct
2 Correct 1176 ms 42368 KB Output is correct
3 Correct 286 ms 15212 KB Output is correct
4 Correct 1000 ms 46408 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 478 ms 19820 KB Output is correct
2 Correct 834 ms 35768 KB Output is correct
3 Correct 581 ms 25440 KB Output is correct
4 Correct 364 ms 22044 KB Output is correct