20分求调!!!
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20分求调!!!
1089651
Zhang_z_h楼主2024/8/9 11:03
#include<bits/stdc++.h>
using namespace std;
const int maxn = 205;
int n, a[maxn * 2];
int sum[maxn * 2][maxn * 2], f[maxn * 2][maxn * 2];
void calc_sum() {
    for (int i = 1; i <= 2 * n; i++) {
        sum[i][i] = a[i];
        for (int j = i + 1; j <= 2 * n; j++) {
            sum[i][j] = sum[i][j - 1] + a[j];
        }
    }
}
int get_min_score() {
    for(int i=1; i<=n; i++) f[i][i]=0;
	calc_sum();
	for(int len=2;len<=n;len++){
		for(int i=1;i<=n-len+1;i++){
			int j=i+len-1;
			f[i][j]=INT_MAX;
			for(int k=i;k<=j-1;k++){
				if(f[i][j]>f[i][k]+f[k+1][j]+sum[i][j])
					f[i][j]=f[i][k]+f[k+1][j]+sum[i][j];
			}
		}
	}
	return f[1][n];
}

int get_max_score() {
	memset(f,0,sizeof  f);
    for(int i=1; i<=n; i++)f[i][i]=0;
	calc_sum();
	for(int len=2;len<=n;len++){
		for(int i=1;i<=n-len+1;i++){
			int j=i+len-1;
			f[i][j]=INT_MIN;
			for(int k=i;k<=j-1;k++){
				if(f[i][j]<f[i][k]+f[k+1][j]+sum[i][j])
					f[i][j]=f[i][k]+f[k+1][j]+sum[i][j];
			}
		}
	}
	return f[1][n];
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        a[n + i] = a[i];
    }
    calc_sum();
    cout << get_min_score()-1 << '\n';
    cout << get_max_score() << '\n';
    return 0;
}
就对了第一个样例QWQ
2024/8/9 11:03
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