#include<stdio.h>

int main(void){
    int L;
    int M;
    int N;
    
    scanf("%d %d %d", &L, &M, &N);
    
    M += N / 25;
    N %= 25;
    
    L += M / 4;
    M %= 4;

    L %= 10;
    
    printf("%d", L + M + N);
    
    return 0;
}