#include<iostream>
#include<algorithm>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>

using namespace std;

int map[25][25];
int mm[25][25];
int v[25][25];
int n,m,w;
int maxx;
int pi;

void DFS(int sum,int pw)
{
    //printf("sum = %d       pw = %d\n",sum,pw);
    for(int i=0; i<=n; i++)
    {
        for(int j=i+1; j<=n; j++)
        {
            if(v[i][j] == 1)
            {
                continue;
            }
            if(map[i][j]!=0 && i>=pi)
            {
                for(int k=0; k<n; k++)
                {
                    for(int kk=0; kk<=i; kk++)
                    {
                        if(v[k][kk] == 1)
                        {
                            pw += mm[k][kk];
                            mm[k][kk] = 0;
                        }
                    }
                }
                if(pw-map[i][j]>=0)
                {
                    mm[i][j] = map[i][j];
                    if(pi < i)
                    {
                        pi = i;
                    }
                    //printf("pw = %d          v[%d][%d] = 1\n",pw,i,j);
                    v[i][j] = 1;
                    //printf("pw = %d\n",pw-map[i][j]);
                    DFS((sum+((j-i)*map[i][j])),pw-map[i][j]);
                    v[i][j] = 0;
                   // printf("***pw = %d               v[%d][%d] = 0\n",pw,i,j);
                }

            }
        }
    }
    if(maxx<sum)
    {
        maxx = sum;
        //return ;
    }
}

int main()
{
    while(scanf("%d%d%d",&w,&n,&m)!=EOF)
    {
        if(w == 0 && n == 0 && m == 0)
        {
            break;
        }
        maxx = 0;
        memset(map,0,sizeof(map));
        memset(v,0,sizeof(v));
        memset(mm,0,sizeof(mm));
        int px,py,pz;
        pi = 0;
        for(int i=0; i<m; i++)
        {
            scanf("%d%d%d",&px,&py,&pz);
            map[px][py] = pz;
        }
        DFS(0,w);
        printf("%d\n",maxx);
    }
    return 0;
}

• Re:不知道哪错了，有大神帮帮看一下代码 或者给几组数据 感激不尽 (2243) 51090220020115 2022-09-13 22:09:13