最大值是对的,最小值错了,求调
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最大值是对的,最小值错了,求调
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Mzh2012楼主2024/8/8 17:08
#include<bits/stdc++.h>

using namespace std;

int arr[105];
int sum[105][105];

int dp[105][105];

#define inf 1e9

int main(){
	int n;
	cin>>n;
	for(int i = 1;i<=n;i++) cin>>arr[i];
	for(int i = 1;i<=n;i++){
		for(int j = i+1;j<=n;j++){
			for(int k = i;k<=j;k++){
				sum[i][j]+=arr[k];
			}
		}
	}
	for(int len = 2;len<=n;len++){
		for(int i = 1;i+len-1<=n;i++){
			int j = i+len-1;
			dp[i][j] = inf;
			for(int k = i;k<j;k++){
				dp[i][j] = min(dp[i][j],dp[i][k]+dp[k+1][j]+sum[i][j]);
			}
		}
	}
	cout<<dp[1][n]<<endl;
	memset(dp,0,sizeof(dp));
	for(int len = 2;len<=n;len++){
		for(int i = 1;i+len-1<=n;i++){
			int j = i+len-1;
			for(int k = i;k<j;k++){
				dp[i][j] = max(dp[i][j],dp[i][k]+dp[k+1][j]+sum[i][j]);
			}
		}
	}
	cout<<dp[1][n];
	

	return 0;
}

最小值输出的是44.

2024/8/8 17:08
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