Dart-a-Mania

#include<bits/stdc++.h>

using namespace std;

set<int>store;

vector<int>score;

void make()
{
    int i;

    store.insert(0);

    for(i=1; i<=20; i++)
    {
        store.insert(i);

        store.insert(i*2);

        store.insert(i*3);
    }

    store.insert(50);

    for(auto it : store)
    {
        score.push_back(it);
    }
}

int main()
{

    make();

    int total,i,j,k,sum,per,len;

    while(scanf("%d",&total)==1)
    {
        if(total<=0)
        {
            printf("END OF OUTPUT\n");

            break;
        }

        per = 0;

        set<set<int>>com;

        len = score.size();

        for(i=0; i<len && score[i]<=total; i++)
        {
            for(j=0; j<len && score[j]<=total-score[i]; j++)
            {
                for(k=0; k<len && score[k]<=total-score[i]-score[j]; k++)
                {
                    sum = score[i]+score[j]+score[k];

                    if(sum==total)
                    {
                        set<int>combination;

                        combination.insert(score[i]);

                        combination.insert(score[j]);

                        combination.insert(score[k]);

                        com.insert(combination);

                        per++;
                    }
                }
            }
        }

        if(per>0)
        {
            printf("NUMBER OF COMBINATIONS THAT SCORES %d IS %d.\n",total,com.size());

            printf("NUMBER OF PERMUTATIONS THAT SCORES %d IS %d.\n",total,per);

        }
        else
        {
            printf("THE SCORE OF %d CANNOT BE MADE WITH THREE DARTS.\n",total);
        }

        printf("**********************************************************************\n");
    }

    return 0;
}