87 lines
1.8 KiB
C++
87 lines
1.8 KiB
C++
#include <cstdio>
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <cmath>
|
|
#include <cctype>
|
|
#include <iostream>
|
|
#include <algorithm>
|
|
#include <functional>
|
|
#include <vector>
|
|
#include <string>
|
|
#include <map>
|
|
#include <set>
|
|
#include <queue>
|
|
#include <stack>
|
|
using namespace std;
|
|
typedef long long LL;
|
|
typedef pair<int,int> PII;
|
|
typedef vector<int> VI;
|
|
#define PB push_back
|
|
#define MP make_pair
|
|
#define clr(a,b) (memset(a,b,sizeof(a)))
|
|
#define rep(i,a) for(int i=0; i<(int)a.size(); i++)
|
|
const int INF = 0x3f3f3f3f;
|
|
const double eps = 1E-8;
|
|
int T;
|
|
int n,l,r;
|
|
char s[200010];
|
|
int num[200010];
|
|
LL tot = 1ll*n*(n+1)/2;
|
|
double fun1(int lim)
|
|
{
|
|
double ret = 0;
|
|
int ed = 1,sum = num[1];
|
|
for(int st=1; st<=n; st++)
|
|
{
|
|
while(sum <= lim && ed < n)
|
|
{
|
|
ed ++;
|
|
sum += num[ed];
|
|
}
|
|
if(sum > lim) ret += 1.0*(n - ed + 1)/(1ll*n*(n-st+1)) ;
|
|
sum -= num[st];
|
|
}
|
|
return ret;
|
|
}
|
|
double fun2(int lim)
|
|
{
|
|
double ret = 0;
|
|
int ed = 1,sum = num[1];
|
|
for(int st=1; st<=n; st++)
|
|
{
|
|
while(sum < lim && ed < n)
|
|
{
|
|
ed ++;
|
|
sum += num[ed];
|
|
}
|
|
if(sum >= lim)
|
|
{
|
|
if(ed-1 >= st) ret += 1.0*(ed - st)/(1ll*n*(n-st+1));
|
|
}
|
|
else
|
|
{
|
|
ret += 1.0*(ed - st + 1)/(1ll*n*(n-st+1));
|
|
}
|
|
sum -= num[st];
|
|
}
|
|
return ret;
|
|
}
|
|
int main()
|
|
{
|
|
scanf("%d",&T);
|
|
while(T--)
|
|
{
|
|
scanf("%d",&n);
|
|
scanf("%s",s+1);
|
|
scanf("%d%d",&l,&r);
|
|
num[0] = 0;
|
|
for(int i=1; i<=n; i++) num[i] = s[i] - 'A';
|
|
double a,b,c;
|
|
c = fun1(r);
|
|
a = fun2(l);
|
|
b = 1 - a - c;
|
|
printf("%lf %lf %lf\n",b,a,c);
|
|
}
|
|
return 0;
|
|
}
|