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Discussion of Problem 1086. Cryptography

This is my code.why it is wrong?Who can help me solve it?Thanks!!!!
Posted by KuangRen 3 Sep 2008 20:25
#include<iostream>
#include<vector>
using namespace std;
int main(){
    int N;
    cin>>N;
    int *a=new int [N];
    vector<int*> b;
    vector<int*>::iterator it,it1;
    for(int i=0;i<N;i++)
        cin>>a[i];
    for(int j=0;j<N;j++)
        b.push_back(a+j);
    for(it=b.begin();it!=b.end();it++)
        for(it1=it+1;it1!=b.end();it1++){
            int *temp;
            if(**it>**it1){
                temp=*it1;
                *it1=*it;
                *it=temp;
            }
        }
    int k=11,count=4;
    for(it=b.begin();it!=b.end();it++){
             int m;
             m=**it;
            switch(m){
                case 1:**it=2;break;
                case 2:**it=3;break;
                case 3:**it=5;break;
                case 4:**it=7;break;
                default :{
                      for(;count!=m;k=k+2){
                          if(k%3!=0 && k%5!=0 && k%7!=0)
                              count++;
                           }
                         **it=k-2;
                        }
                     }
          }
        for(int y=0;y<N;y++)
            cout<<a[y]<<endl;
        return 0;
}