zoj 1037 Gridland

#include <iostream>#include <cstdio>#include <cmath>using namespace std;int main(){    int T,row,col,count;    scanf( "%d",&T );    count=1;    while( T-- )    {        scanf( "%d%d",&row,&col );        printf( "Scenario #%d:n",count );        if( row%2==0 || col%2==0 )  printf( "%.2lfnn",double(row)*double(col) );        else printf( "%.2lfnn",double(row)*double(col)-1.0+sqrt(2.0) );        count++;    }}