oj.uz

Submission #638808

# Submission time Handle Problem Language Result Execution time Memory
638808 2022-09-07T14:16:13 Z penguin133 Let's Win the Election (JOI22_ho_t3) C++14
5 / 100
 2039 ms 416352 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int, int>
#define pii pair<int, pair<int, int> > 
#define fi first
#define se second
int n,k;
pair<long double, long double> A[300005];
bool cmp(pair<long double, long double> a, pair<long double, long double> b){
	if(a.se == -1)return 0;
	if(b.se == -1)return 1;
	return a.se < b.se;
}
long double dp[505][505][105];
void solve(){
	cin >> n >> k;
	int cnt = 0;
	for(int i=1;i<=n;i++)cin >> A[i].fi >> A[i].se, cnt += (A[i].se != -1);
	sort(A+1, A+n+1, cmp);
	for(int i=1;i<=k;i++){
		for(int j=0;j<=n;j++){
			dp[0][i][j] = 1e18;
			if(j)dp[0][0][j] = 1e18;
		}
	}
	dp[0][0][0] = 0.0;
	for(int i=1;i<=n;i++){
		for(int j=0;j<=k;j++){
			for(int x=0;x<=cnt;x++){
				dp[i][j][x] = dp[i-1][j][x];
				if(j && x && A[i].se > 0)dp[i][j][x] = min(dp[i][j][x], dp[i-1][j-1][x-1] + A[i].se/x);
				if(j)dp[i][j][x] = min(dp[i][j][x], dp[i-1][j-1][x] + A[i].fi/(x+1));
			}
		}
	}
	long double ans = 1e18;
	for(int i=0;i<=cnt;i++)ans=  min(ans, dp[n][k][i]);
	cout << fixed << setprecision(12) << ans;
}
 
main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--){
		solve();
	}
}

Compilation message

Main.cpp:42:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   42 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 21 ms 44216 KB Output is correct
6 Correct 40 ms 105892 KB Output is correct
7 Correct 85 ms 208656 KB Output is correct
8 Correct 134 ms 311280 KB Output is correct
9 Correct 175 ms 414064 KB Output is correct
10 Correct 117 ms 290764 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 21 ms 44216 KB Output is correct
6 Correct 40 ms 105892 KB Output is correct
7 Correct 85 ms 208656 KB Output is correct
8 Correct 134 ms 311280 KB Output is correct
9 Correct 175 ms 414064 KB Output is correct
10 Correct 117 ms 290764 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Incorrect 612 ms 130272 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2039 ms 416352 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 21 ms 44216 KB Output is correct
6 Correct 40 ms 105892 KB Output is correct
7 Correct 85 ms 208656 KB Output is correct
8 Correct 134 ms 311280 KB Output is correct
9 Correct 175 ms 414064 KB Output is correct
10 Correct 117 ms 290764 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Incorrect 612 ms 130272 KB Output isn't correct
13 Halted 0 ms 0 KB -