Help me in solving S100 problem

help
,
1

My issue

whats wrong with this code
My approach is, find the first occurance of 1.
now change all the 1 to 0 from the first occurance of 1.
include
using namespace std;

int main() {
int test;
cin>>test;
while(test–){
int x;
cin>>x;
string s;
cin>>s;
bool y=true;
string ans=“”;
for(int i=0;i<x-2;i++){
if(s.at(i)==‘1’&&y){
ans+=“1”;
y=false;
}
else
ans+=“0”;
}
ans+=“00”;
cout<<ans<<endl;
}
return 0;
}

My code

#include <iostream>
using namespace std;

int main() {
    int test;
    cin>>test;
    while(test--){
        int x;
        cin>>x;
        string s;
        cin>>s;
        bool y=true;
        string ans="";
        for(int i=0;i<x-2;i++){
            if(s.at(i)=='1'&&y){
                ans+="1";
                y=false;
            }
            else
                ans+="0";
        }
        ans+="00";
        cout<<ans<<endl;
    }
    return 0;
}

Problem Link: S100 Problem - CodeChef

2

@harsh_letscode
for “011” your code will print “000” which is not possible

1 Like
3

thank you ,got it