工作分配问题

#include<iostream>using namespace std;int n,cost=0;int x[15],c[15][15];void work(int i,int count){    if(i>n && count<cost){      cost = count;      return ;    }    if(count<cost)      for(int j=1;j<=n;j++)        if(x[j] == 0){            x[j] = 1;            work(i+1,count+c[i][j]);            x[j] = 0;           }}int main(){    cin>>n;    for(int i=1;i<=n;i++){      for(int j=1;j<=n;j++){        cin>>c[i][j];        x[j] = 0;        }      cost+=c[i][i];      }    work(1,0);    cout<<cost<<endl;    return 0;}