hdu 2023 过了么

用的清0函数

#include<iostream>#include<iomanip>using namespace std;int main(){double stu[50],clas[5],a[50][5];int n,m;memset(stu,0,sizeof(stu));       //给数组清0          memset(clas,0,sizeof(clas));while(cin>>n>>m){for(int i=0;i<n;i++){for(int j=0;j<m;j++){cin>>a[i][j];stu[i]+=a[i][j];clas[j]+=a[i][j];//the stu[i]'s all score}}for(int i=0;i<n;i++){//stu_averif(i=n-1)cout<<fixed<<setprecision(2)<<stu[i]/m;elsecout<<fixed<<setprecision(2)<<stu[i]/m<<" ";}cout<<endl;for(int i=0;i<m;i++){//clas_averif(i=m-1)cout<<fixed<<setprecision(2)<<clas[i]/n;elsecout<<fixed<<setprecision(2)<<clas[i]/n<<" ";}cout<<endl;int ans=0;//alrightbool iff;for(int i=0;i<n;++i){iff=true;for(int j=0;j<m;++j){if(a[i][j]<(clas[j]/n)){iff=false;break;  }}if(iff){ans=ans+1;}} cout<<ans<<endl;}return 0;}