poj 1254 Hansel and Grethel

#include <iostream>#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>using namespace std;#define pi acos(-1)int main(){    int t;    scanf("%d", &t);    while (t--)    {        int x1, y1, x2, y2, d1, d2;        scanf("%d%d%d%d%d%d", &x1, &y1, &d1, &x2, &y2, &d2);        double k1 = tan((450 - d1)%180 * pi/ 180);        double k2 = tan((450 - d2)%180 * pi/ 180);        double x = (y2 - y1 - x2 * k2 + x1 * k1) / (k1 - k2);        double y = ((x2 - x1) * k1 * k2 + y1 * k2 - y2 * k1) / (k2 - k1);        printf("%.4f %.4fn", x, y);    }    return 0;}