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求教高手,帮忙看看下面是我的代码,自己测试没什么问题,但是为什么就死wa呢…… ft # include <iostream> # include <vector> using namespace std; int a[101][101]; vector<int> U,V; void input(int); int shu(int n); int main() { int n; while(cin) { cin>>n; input(n); cout<<shu(n)<<endl; U.clear(); V.clear(); } return 0; } void input(int n) { for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) cin>>a[i][j]; } int shu(int n) { int answer=0; for(int i=2;i<=n;i++) V.push_back(i); U.push_back(1); int min=100001,mini=0,minj=0,num=1; while(num!=n) { min=100001; for(size_t i=0;i<U.size();i++) for(size_t j=0;j<V.size();j++) { if(a[U[i]][V[j]]<min) { min=a[U[i]][V[j]]; mini=U[i]; minj=V[j]; } } answer+=a[mini][minj]; U.push_back(minj); num++; for(vector<int>::iterator iter=V.begin();iter!=V.end();++iter) { if(*iter==minj) { V.erase(iter); break; } } } return answer; } Followed by:
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