#include<stdio.h>
int main(){
    int qx, px, qy, py, qz, pz;
    if(scanf("%d %d %d %d %d %d", &qx, &px, &qy, &py, &qz, &pz) !=6){
        printf("Invalid input");
        return 0;
    }
    if(qx < 0 || px < 0 || qy < 0 || py < 0 || qz < 0 || pz < 0 ||
    qx < -1000 || qx > 1000 || px < -1000 || px > 1000 ||
    qy < -1000 || qy > 1000 || py < -1000 || py > 1000 ||
    qz < -1000 || qz > 1000 || pz < -1000 || pz > 1000)
    {
        printf("Invalid input");
        return 0;
    }
    long total = (long)qx*px + (long)qy*py + (lon)
}