题目1050：完数

#include <iostream> #include <stdio.h> #include <algorithm> #include <math.h> #include <string> #include <string.h> #include <vector> using namespace std; //1050 完数 int isWS(int n){     int sum=0;     //if(n==1) return -1;     for(int i=1;i<n;i++)         if(n%i==0) sum+=i;     //printf("sum=%d\n",sum);     if(sum==n)  return n;     else        return -1;   } vector<int> N; int main(){     int n;     while(scanf("%d",&n)!=EOF){         //printf("ans=%d",isWS(n));         N.clear();         for(int i=1;i<=n;i++){             if(isWS(i)>0)                 N.push_back(i);         }         for(int i=0;i<N.size();i++){             if(i==N.size()-1)                 printf("%d\n",N[i]);             else                 printf("%d ",N[i]);         }     }     return 0; } /**************************************************************     Problem: 1050     User: cust123     Language: C++     Result: Accepted     Time:230 ms     Memory:1520 kb ****************************************************************/