C++ :

#include<cstdio>
int a,b,c;
int main()
{
    //freopen("score.in","r",stdin);
    //freopen("score.out","w",stdout);
    scanf("%d %d %d",&a,&b,&c);
    a/=10;b/=10;c/=10;
    printf("%d",a*2+b*3+c*5);
    return 0;
}