/
chef_&_his_friend.cpp
123 lines (113 loc) · 2.47 KB
/
chef_&_his_friend.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define sf scanf
#define pf printf
long long int binarySearch(long long int arr[],long long int l, long long int r, long long int x)
{
while (l <= r)
{
long long int m = l + (r-l)/2;
if (arr[m] == x) return m; // Check if x is present at mid
if (arr[m] < x) l = m + 1; // If x greater, ignore left half
else r = m - 1; // If x is smaller, ignore left half
}
return -1; // if we reach here, then element was not present
}
void merge(long long int arr[], long long int l, long long int m, long long int r)
{
long long int i, j, k;
long long int n1 = m - l + 1;
long long int n2 = r - m;
/* create temp arrays */
long long int L[n1], R[n2];
/* Copy data to temp arrays L[] and R[] */
for(i = 0; i < n1; i++)
L[i] = arr[l + i];
for(j = 0; j < n2; j++)
R[j] = arr[m + 1+ j];
/* Merge the temp arrays back into arr[l..r]*/
i = 0;
j = 0;
k = l;
while (i < n1 && j < n2)
{
if (L[i] <= R[j])
{
arr[k] = L[i];
i++;
}
else
{
arr[k] = R[j];
j++;
}
k++;
}
/* Copy the remaining elements of L[], if there are any */
while (i < n1)
{
arr[k] = L[i];
i++;
k++;
}
/* Copy the remaining elements of R[], if there are any */
while (j < n2)
{
arr[k] = R[j];
j++;
k++;
}
}
/* l is for left index and r is right index of the sub-array
of arr to be sorted */
void mergeSort(long long int arr[], long long int l, long long int r)
{
if (l < r)
{
long long int m = l+(r-l)/2;//Same as (l+r)/2, but avoids overflow for large l and h
mergeSort(arr, l, m);
mergeSort(arr, m+1, r);
merge(arr, l, m, r);
}
}
void printArray(long long int A[], long long int size)
{
long long int i;
for (i=0; i < size; i++)
printf("%lld ", A[i]);
printf("\n");
}
int main()
{
ll t;
sf("%lld",&t);
while(t--)
{
double x,p,q,a,b,t1,m,n,t2;
sf("%lf%lf%lf%lf",&a,&b,&t1,&t2);
if(t1==0&&t2==0)
pf("0.000000\n");
else if(t1>=b&&t2>=a)
pf("1.000000\n");
else
{
if(t1>b)
p=0;
else if((a+t1)<b)
p=(a*a/2)+(a*(b-a-t1));
else
p=(b-t1)*(b-t1)/2;
if(t2>=a)
q=0;
else if((b+t2)<a)
q=(b*b/2)+(b*(a-b-t2));
else
q=(a-t2)*(a-t2)/2;
x=(p+q)/(a*b);
x=1-x;
pf("%f\n",x);
}
}
return 0;
}