10491 - Cows and Cars Time limit: 3.000 seconds http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=115&page=show_problem&problem=1432 In television contests, participants are often asked to choose one from a set…
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1432 #include <stdio.h> int main () { int a, b, c; ) { printf()) / (a + b - c - ) / (a + b )); } ; }…
題目:有m+n個們,每個門後面有牛或者車:有n仅仅牛,m輛車,你選擇当中1個: 然後打開当中的k你沒有選中的門後是牛的,問你改變選時得到車的概率. 說明:數學題,概率.全概率公式就可以: 說明:第1001了O(∩_∩)O~ #include <stdio.h> int main() { int cow,car,show; while (~scanf("%d%d%d",&cow,&car,&show)) printf("%.5lf\n&quo…
公式很好推,表示被高中生物遗传概率计算虐过的人 这个公式简直不需要动脑 #include<cstdio> using namespace std; int main() { double a, b, c; while(~scanf("%lf%lf%lf", &a, &b, &c)) { double ans = (a * b + b * (b - 1)) / ((a + b) * (a + b - c - 1)); printf("%.5l…