oj.uz

Submission #733736

# Submission time Handle Problem Language Result Execution time Memory
733736 2023-05-01T08:39:05 Z shoryu386 Let's Win the Election (JOI22_ho_t3) C++17
0 / 100
 2500 ms 996424 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define db float

#define MAX 502
basic_string<db> dp[MAX][MAX];
int n, k;
 
pair<db, db> info[MAX];

int maxcolab;
 
bool cmp(pair<db, db> a, pair<db, db> b){
	if (a.second == -1) a.second = 1000000000;
	if (b.second == -1) b.second = 1000000000;
	
	return a.second < b.second;
	
}
 
db recur(int idx, int colabCount, int voteCount){
	#define cringe info
	if (maxcolab > colabCount) return 1000000000;
	if (voteCount > k) return 1000000000;
	
	if (idx == n && voteCount == k && maxcolab == colabCount) return 0;
	else if (idx == n) return 1000000000;
	
	if (dp[idx][colabCount][voteCount] != -1) return dp[idx][colabCount][voteCount];
	if (cringe[idx].second == -1) return dp[idx][colabCount][voteCount] = min(recur(idx+1, colabCount, voteCount), recur(idx+1, colabCount, voteCount+1) + cringe[idx].first/maxcolab);
	return dp[idx][colabCount][voteCount] = min({recur(idx+1, colabCount, voteCount), recur(idx+1, colabCount, voteCount+1) + cringe[idx].first/maxcolab, recur(idx+1, colabCount+1, voteCount+1) + cringe[idx].second/colabCount});
}
db ans = 1000000000000000LL;
db query(int x){
	for (int a = 0; a <= n; a++) for (int y = 0; y <= n+1; y++) {dp[a][y].clear(); dp[a][y].reserve(n); for (int z = 0; z <= n; z++) dp[a][y].push_back(-1);}
	maxcolab = x;
	db r = recur(0, 1, 0);
	ans = min(ans, r);
	return r;
}

signed main(){

	cin >> n >> k;
	
	for (int x = 0; x < n; x++) cin >> info[x].first >> info[x].second;
	
	sort(info, info+n, cmp);
	
	int l = 1, r = n+1;
	while (r - l >= 3){
		int m1 = l + (r-l)/3;
		int m2 = r - (r-l)/3;
		
		if (query(m1) > query(m2)){
			l = m1;
		}
		else{
			r = m2;
		}
	}
	for (int i = l; i <= r; i++){
		ans = min(ans, query(i));
	}

	cout << std::setprecision(9) << ans;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8148 KB Output is correct
2 Correct 5 ms 8148 KB Output is correct
3 Correct 5 ms 8196 KB Output is correct
4 Correct 5 ms 8148 KB Output is correct
5 Execution timed out 2643 ms 996352 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8148 KB Output is correct
2 Correct 5 ms 8148 KB Output is correct
3 Correct 5 ms 8196 KB Output is correct
4 Correct 5 ms 8148 KB Output is correct
5 Execution timed out 2643 ms 996352 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 6 ms 8148 KB Output is correct
3 Incorrect 4 ms 8148 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 6 ms 8148 KB Output is correct
3 Incorrect 4 ms 8148 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 6 ms 8148 KB Output is correct
3 Incorrect 4 ms 8148 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2611 ms 996424 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8148 KB Output is correct
2 Correct 5 ms 8148 KB Output is correct
3 Correct 5 ms 8196 KB Output is correct
4 Correct 5 ms 8148 KB Output is correct
5 Execution timed out 2643 ms 996352 KB Time limit exceeded
6 Halted 0 ms 0 KB -