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  1. #include<iostream>
  2. #include<algorithm>
  3. #include<stdlib.h>
  4. #include<string.h>
  5. #include<iomanip>
  6. #include<math.h>
  7. #include<bits/stdc++.h>
  8.  
  9. using namespace std;
  10. int main()
  11. {
  12.     int n,cnt=0;
  13.     cin>>n;
  14.     string s;
  15.     cin>>s;
  16.     for(int i=0;i<n;i++)
  17.     {
  18.         if(s[i]=='1')
  19.         {
  20.             cnt++;
  21.         }
  22.     }
  23.     if(cnt==0)
  24.     {
  25.         cout<<s<<endl;
  26.     }
  27.     else
  28.     {
  29.         char ar[10000000];
  30.         ar[0]='1';
  31.         for(int i=1;i<(n+1-cnt);i++)
  32.         {
  33.             ar[i]='0';
  34.         }
  35.         cout<<ar<<endl;
  36.     }
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 24872KB
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https://ideone.com/kB95WF
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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