#include <stdio.h>

int main(){
    int sum, c100, c25, c1, c1000;
    scanf("%d", &c100);
    scanf("%d", &c25);
    scanf("%d", &c1);
    sum = c100 * 100 + c25 * 25 + c1;
    c1000 = sum / 1000;
    sum %= 1000;
    c100 = sum / 100;
    sum %= 100;
    c25 = sum / 25;
    sum %= 25;
    c1 = sum;
    printf("%d", c1 + c25 + c100 + c1000);
    return 0;
}