#include <stdio.h>

int main()
{
        int L, M, N;
        scanf("%d\n%d\n%d\n", &L, &M, &N );

        int sum;
        sum = 100 * L + 25 * M + N;


        int sen, L2, M2, N2;

        sen = sum / 1000;
        sum -= sen * 1000;

        L2 = sum / 100;
        sum -= L2 * 100;

        M2 = sum / 25;
        sum -= M2 * 25;

        N2 = sum;

        printf("%d\n", L2+M2+N2 );
        return 0;

}