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UVA Problem 11778 Solution – Graph Coloring

Problem Solving, UVa

 

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int e,a;

    while(cin>>a)

    {

        if(a==0) break;

        e=0;

        while(a>=3)

        {

            a=a-3;

        e++;

   

        a++;

        }

        if(a==2)

        {

            cout<<e+1<<endl;

        }

        else

        cout<<e<<endl;

    }

    return 0;

}

 

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