ACM/ICPC 2012 天津 - HDU 4438 - 算概率

#include<cstdio>

int main()
{
int x, y;
double p, q;
int t;
scanf("%d",&t);
while(t--)
{
scanf("%d %d %lf %lf", &x, &y, &p, &q);
double tig = (x * p + y * p) * q + x * (1 - q);
double wolf = (y * p + x * p) * (1 - q) + y * q;
if(tig > wolf) printf("tiger %.4lf\n", tig);
else printf("wolf %.4lf\n", wolf);
}
return 0;
}