456B Codeforces - Fedya and Maths

456B Codeforces - Fedya and maths

Link ; http://codeforces.com/problemset/problem/456/B

Solution in C++

#include <bits/stdc++.h>

using namespace std;

#define pii pair<int,int>

typedef long long int lli;

int n,m=1;

string inp;

int main()

{

    ios::sync_with_stdio(0);

    cin.tie(0);cout.tie(0);

    cin>>inp;

    if(inp.size()==1)n=inp[0]-'0';

    else n=(inp[inp.size()-2]-'0')*10+inp[inp.size()-1]-'0';

    m+=((n%2)?4:6);

    if(n%4==1)m+=5;

    else if(n%4==2)m+=13;

    else if(n%4==3)m+=15;

    else m+=1+6;

    cout<<m%5;

    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.