#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;
}
# |
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 |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
102 ms |
4984 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
210 ms |
15608 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
211 ms |
16944 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
199 ms |
15992 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
275 ms |
17784 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |