Submission #157220

#	Time	Username	Problem	Language	Result	Execution time	Memory
157220		manh9203	스트랩 (JOI14_straps)	C++17	50 / 100	38 ms	31864 KiB

straps

#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
const int N = 2e3 + 5;
long long n,dp[N][N];
pair<long long,long long> rope[N];
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n;
	for(int i=1;i<=n;i++) cin >> rope[i].fi >> rope[i].se;
	for(int i=0;i<=n;i++){
		for(int j=1;j<=n;j++){
			dp[i][j] = -1e18;
		}
	}
	sort(rope+1, rope+1+n);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=i;j++){
			dp[i][j] = max(dp[i-1][min((long long)i-1, j + rope[i].fi - 1)], dp[i-1][j-1]) + rope[i].se;
			dp[i][j] = max(dp[i][j], dp[i-1][j]);
		}
	}
	cout << max(dp[n][0], dp[n][1]);
}

• Subtask 1: 0 / 5
• Subtask 2: 5 / 5
• Subtask 3: 45 / 45
• Subtask 4: 0 / 45