#include <bits/stdc++.h>
using namespace std;
#define f(i,k,n) for(int i=k; i<n; i++)
#define ll long long
const int inf = INT_MAX;

void solve()
{
    const int a=300, b=350, c=400;
    int x,y,z;
    cin>>x>>y>>z;
    if(x+y+z <10)
    {
        cout<<-1;
        return;
    }
    int q=min(10,x);
    int s=q*a+min((10-q),y)*b +(10- q- min(10-q,y))*c;  
    cout<<s;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    //cin>>t;
    while(t--)  solve();
    return 0;
}