546B codeforces - Soldiers and Badges

546B codeforces

Soldiers and Badges

Solutions in c++

#include <iostream>

using namespace std;

int all[100002]={0},vis[100002]={0};

int main()

{

    int n,sol=0;

    cin>>n;

    for(int i=0;i<n;i++){

        cin>>all[i];

        vis[all[i]]++;

    }

    for(int i=0;i<n;i++){

        if(vis[all[i]]>1){

            int k=all[i];

            while(vis[k]){

                k++;

                sol++;

             }

            vis[all[i]]--;

            vis[k]=1;

      }

    }

    cout<<sol<<"\n";

    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.