Codeforces Round #313 (Div. 2) C - Gerald's Hexagon

Posted 2020-07-05

1 int main() {
2     int a[8];
3      while(scanf("%d",&a[0]) != EOF) {
4         for(int i = 1 ; i < 6 ; i ++)    scanf("%d",&a[i]);
5         printf("%d\\n",(a[0]+a[1]+a[2])*(a[0]+a[1]+a[2])-a[0]*a[0]-a[2]*a[2]-a[4]*a[4]);    
6      }
7 }