oj.uz

답안 #1002756

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1002756 2024-06-19T19:24:08 Z Sofiatpc Cigle (COI21_cigle) C++14
0 / 100
 7 ms 1372 KB 
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define sc second
const int MAXN = 505;
int dp[MAXN][MAXN], d[MAXN], sp[MAXN];

int sum(int i, int j){
	return sp[j] - sp[i-1];
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	int n; cin>>n;
	for(int i = 1; i <= n; i++){
		cin>>d[i];
		sp[i] = sp[i-1]+d[i];
	}

	int ans = 0;
	for(int r = n-1; r >= 1; r--){
		set<pair<int,int>> st; 
		for(int j = r+1; j < n; j++)st.insert({sum(r+1,j), dp[r+1][j+1]});

		int qtd = 0;
		for(int l = r; l >= 1; l--){
			
			dp[l][r] = max(dp[l+1][r+1], dp[l][r+1]);
				
			if(l!=r){
				auto it = st.lower_bound({sum(l+1,r),0});
				if(it == st.end() || it->fi > sum(l+1,r))continue;

				qtd++;
				dp[l][r] = max(dp[l][r], (it->sc) + qtd);
			}
			ans = max(ans,dp[l][r]);
		}		
	}
		
	cout<<ans<<"\n";
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 1372 KB Output is correct
2 Incorrect 7 ms 1372 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -