CCF考试——201709-1打酱油

#include <iostream>
using namespace std;

int ans = 0,sum;
int cnt1 = 0,cnt3 = 0,cnt5 = 0;

int Find(int sum,int num)
{
    int i = 0;
    for(i = 0 ; i*num*10 <= sum ; i++);
    return i-1;
}

int main()
{
    while(cin>>sum){
        cnt5 = Find(sum,5);
        ans += cnt5*7;
        sum -= cnt5*50;
        cnt3 = Find(sum,3);
        ans += cnt3*4;
        sum -= cnt3*30;
        cnt1 = Find(sum,1);
        ans += cnt1;
        cout<<ans<<endl;
    }

    return 0;
}