999C Codeforces - Alphaberic Removals

999C Codeforces 

Alphabetical Removals

Solution in c++

#include <iostream>
#include <map>

using namespace std;
map<char,int> se,ses;
int main()
{
    int a,s,e;
    string b;
    cin>>a>>e>>b;

    for(int i=0;i<a;i++){
        se[b[i]]++;
        ses[b[i]]++;
    }

    for(int i=97;i<=122;i++){
        int mn=min(e,se[char(i)]);
        se[char(i)]-=mn;
        e-=mn;
    }
    for(int i=0;i<a;i++){
        if(ses[b[i]]>se[b[i]]){ses[b[i]]--;}
        else{
            cout<<b[i];
        }
    }
    return 0;
}

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About Mohamed Sobhi

My name is Mo.Sobhy ,I study at School excelling high school in Ain Shams ,Cairo
My hobbies is programming ,and web development ,playing chess and writing horror stories.