#include #include #include #include #include #include #include int solution(int A,int B,int z) { return ( ( ( ( 1 >= A/B && 1 <= B/A ) ) && ( (2*z-2) % (A+B) == 0 ) )? ((2*z-2)/(A+B)): -1); } int main(){ int n,k; scanf("%d",&n); for(int i=1;i