#include<stdio.h>
main(){
    int L,M,N;
    scanf("%d%d%d",&L,&M,&N);
    int sum = L*100 + M*25 + N;
    sum %= 1000;
    int count = sum / 100;
    sum %= 100;
    count += sum / 25;
    sum %= 25;
    count += sum;
    printf("%d\n",count);
}