#include <stdio.h>
int totalcost(int qx,int px,int qy,int int py,int qz,int pz)
{
    int main() {
        int qx, px, qy,py, qz,pz;
        scanf("%d %d", &qx, &px);
        scanf("%d %d", &qy, &py);
        scanf("%d %d", &qz, &pz);
        if(qx<0||px<0||py<0||qz<0||pz<0) {
            printf("Invalid input");
            return 0;
        }
        int total = totalcost(qx, px, qy,py, qz,pz);
        print
    }
}