标签:东方 amp print pre ann using ble int double
#include<cstdio>
using namespace std;
const int N = 1e5;
double fx[N + 5] , fy[N + 5] , g[N + 5];
int x , y;
inline void getp(int n , double f[] , double g[])
{
for(register int i = 1; i <= n; i++)
{
for(register int j = 0; j <= 6 * i; j++)
{
g[j] = 0;
for(register int k = j - 1; k >= j - 6 && k >= 0; k--) g[j] += f[k] / 6;
}
for(register int j = 0; j <= 6 * i; j++) f[j] = g[j];
}
}
int main()
{
scanf("%d" , &x) , scanf("%d" , &y);
fx[0] = fy[0] = 1;
getp(x , fx , g);
getp(y , fy , g);
double ans = 0 , sum = 0;
for(register int i = 1; i <= x * 6; i++) ans += fx[i] * sum , sum += fy[i];
printf("%.2lf%%\n" , ans * 100);
}
标签:东方 amp print pre ann using ble int double
原文地址:https://www.cnblogs.com/leiyuanze/p/12346533.html