#include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> using namespace std; int main() { int t; int a,b; scanf("%d",&t); for(int i=0;i<t;i++) { scanf("%d %d",&a,&b); printf("Scenario #%d:\n",i+1); if(a%2==0||b%2==0) { printf("%.2f\n",(double)a*b); } else { printf("%.2f\n",(double)a*b-1+sqrt(2)); } printf("\n"); } return 0; }