#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define p(x,y) pair<ll,ll>(x,y)
#define BIT(i,x) ((x>>i)&1)
#define MASK(x) (1<<x)
#define ld long double
#define __builtin_popcount __builtin_popcountll
#define pll pair<ll,ll>
template<class T1,class T2>
bool maximize(T1 &x,const T2 &y)
{
if(x<y)
{
x=y;
return 1;
}
return 0;
}
template<class T1,class T2>
bool minimize(T1 &x,const T2 &y)
{
if(x>y)
{
x=y;
return 1;
}
return 0;
}
void online()
{
std::ios_base::sync_with_stdio(0);
cin.tie(0);
#ifdef thuc
freopen("input.inp", "r", stdin);
freopen("output.out","w", stdout);
#else
#endif
}
const ll N=5e2+10;
ll n,k;
pair<ld,ld> a[N];
ld f[N][N];
int main()
{
online();
cin>>n>>k;
for(int i=1;i<=n;i++)
{
cin>>a[i].se;
cin>>a[i].fi;
if(a[i].fi==-1) a[i].fi=1e12;
}
sort(a+1,a+n+1);
ld ans=1e15;
for(int t=0;t<=k;t++)
{
for(int i=1;i<=n;i++)
{
for(int j=0;j<=n;j++) f[i][j]=1e15;
}
f[0][0]=0;
for(int i=0;i<n;i++)
{
for(int j=0;j<=i;j++)
{
if(i-j>=t) minimize(f[i+1][j],f[i][j]);
minimize(f[i+1][j],f[i][j]+(a[i+1].fi/(ld)(i-j+1)));
minimize(f[i+1][j+1],f[i][j]+(a[i+1].se/(ld)(t+1)));
}
}
minimize(ans,f[n][k-t]);
}
cout<<ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
111 ms |
4328 KB |
Output is correct |
6 |
Correct |
273 ms |
4300 KB |
Output is correct |
7 |
Correct |
551 ms |
4328 KB |
Output is correct |
8 |
Correct |
797 ms |
4332 KB |
Output is correct |
9 |
Correct |
1061 ms |
4328 KB |
Output is correct |
10 |
Correct |
664 ms |
4324 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
111 ms |
4328 KB |
Output is correct |
6 |
Correct |
273 ms |
4300 KB |
Output is correct |
7 |
Correct |
551 ms |
4328 KB |
Output is correct |
8 |
Correct |
797 ms |
4332 KB |
Output is correct |
9 |
Correct |
1061 ms |
4328 KB |
Output is correct |
10 |
Correct |
664 ms |
4324 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
314 ms |
4328 KB |
Output is correct |
13 |
Correct |
334 ms |
4328 KB |
Output is correct |
14 |
Correct |
309 ms |
4332 KB |
Output is correct |
15 |
Correct |
688 ms |
4328 KB |
Output is correct |
16 |
Correct |
670 ms |
4340 KB |
Output is correct |
17 |
Correct |
712 ms |
4332 KB |
Output is correct |
18 |
Correct |
989 ms |
4328 KB |
Output is correct |
19 |
Correct |
962 ms |
4332 KB |
Output is correct |
20 |
Correct |
1025 ms |
4324 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
324 KB |
Output is correct |
3 |
Correct |
0 ms |
324 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
324 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
324 KB |
Output is correct |
3 |
Correct |
0 ms |
324 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
324 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
324 KB |
Output is correct |
21 |
Correct |
1 ms |
352 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
328 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
420 KB |
Output is correct |
30 |
Correct |
1 ms |
328 KB |
Output is correct |
31 |
Correct |
1 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
328 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
0 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
0 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
324 KB |
Output is correct |
3 |
Correct |
0 ms |
324 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
328 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
324 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
324 KB |
Output is correct |
21 |
Correct |
1 ms |
352 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
328 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
420 KB |
Output is correct |
30 |
Correct |
1 ms |
328 KB |
Output is correct |
31 |
Correct |
1 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
328 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
0 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
0 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
340 KB |
Output is correct |
41 |
Correct |
2 ms |
852 KB |
Output is correct |
42 |
Correct |
2 ms |
840 KB |
Output is correct |
43 |
Correct |
3 ms |
852 KB |
Output is correct |
44 |
Correct |
3 ms |
852 KB |
Output is correct |
45 |
Correct |
5 ms |
852 KB |
Output is correct |
46 |
Correct |
5 ms |
852 KB |
Output is correct |
47 |
Correct |
6 ms |
852 KB |
Output is correct |
48 |
Correct |
6 ms |
960 KB |
Output is correct |
49 |
Correct |
7 ms |
976 KB |
Output is correct |
50 |
Correct |
7 ms |
944 KB |
Output is correct |
51 |
Correct |
9 ms |
852 KB |
Output is correct |
52 |
Correct |
9 ms |
948 KB |
Output is correct |
53 |
Correct |
6 ms |
948 KB |
Output is correct |
54 |
Correct |
6 ms |
852 KB |
Output is correct |
55 |
Correct |
6 ms |
852 KB |
Output is correct |
56 |
Correct |
6 ms |
832 KB |
Output is correct |
57 |
Correct |
6 ms |
852 KB |
Output is correct |
58 |
Correct |
6 ms |
948 KB |
Output is correct |
59 |
Correct |
6 ms |
944 KB |
Output is correct |
60 |
Correct |
7 ms |
852 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
963 ms |
4324 KB |
Output is correct |
2 |
Correct |
951 ms |
4328 KB |
Output is correct |
3 |
Correct |
959 ms |
4308 KB |
Output is correct |
4 |
Correct |
955 ms |
4332 KB |
Output is correct |
5 |
Correct |
950 ms |
4308 KB |
Output is correct |
6 |
Correct |
930 ms |
4428 KB |
Output is correct |
7 |
Correct |
994 ms |
4324 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
111 ms |
4328 KB |
Output is correct |
6 |
Correct |
273 ms |
4300 KB |
Output is correct |
7 |
Correct |
551 ms |
4328 KB |
Output is correct |
8 |
Correct |
797 ms |
4332 KB |
Output is correct |
9 |
Correct |
1061 ms |
4328 KB |
Output is correct |
10 |
Correct |
664 ms |
4324 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
314 ms |
4328 KB |
Output is correct |
13 |
Correct |
334 ms |
4328 KB |
Output is correct |
14 |
Correct |
309 ms |
4332 KB |
Output is correct |
15 |
Correct |
688 ms |
4328 KB |
Output is correct |
16 |
Correct |
670 ms |
4340 KB |
Output is correct |
17 |
Correct |
712 ms |
4332 KB |
Output is correct |
18 |
Correct |
989 ms |
4328 KB |
Output is correct |
19 |
Correct |
962 ms |
4332 KB |
Output is correct |
20 |
Correct |
1025 ms |
4324 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
324 KB |
Output is correct |
23 |
Correct |
0 ms |
324 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
0 ms |
328 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
324 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
0 ms |
340 KB |
Output is correct |
33 |
Correct |
0 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
0 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
324 KB |
Output is correct |
41 |
Correct |
1 ms |
352 KB |
Output is correct |
42 |
Correct |
1 ms |
332 KB |
Output is correct |
43 |
Correct |
1 ms |
340 KB |
Output is correct |
44 |
Correct |
0 ms |
340 KB |
Output is correct |
45 |
Correct |
1 ms |
340 KB |
Output is correct |
46 |
Correct |
1 ms |
340 KB |
Output is correct |
47 |
Correct |
1 ms |
328 KB |
Output is correct |
48 |
Correct |
1 ms |
340 KB |
Output is correct |
49 |
Correct |
1 ms |
420 KB |
Output is correct |
50 |
Correct |
1 ms |
328 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
340 KB |
Output is correct |
53 |
Correct |
1 ms |
340 KB |
Output is correct |
54 |
Correct |
1 ms |
340 KB |
Output is correct |
55 |
Correct |
1 ms |
328 KB |
Output is correct |
56 |
Correct |
1 ms |
332 KB |
Output is correct |
57 |
Correct |
0 ms |
340 KB |
Output is correct |
58 |
Correct |
1 ms |
340 KB |
Output is correct |
59 |
Correct |
0 ms |
340 KB |
Output is correct |
60 |
Correct |
1 ms |
340 KB |
Output is correct |
61 |
Correct |
2 ms |
852 KB |
Output is correct |
62 |
Correct |
2 ms |
840 KB |
Output is correct |
63 |
Correct |
3 ms |
852 KB |
Output is correct |
64 |
Correct |
3 ms |
852 KB |
Output is correct |
65 |
Correct |
5 ms |
852 KB |
Output is correct |
66 |
Correct |
5 ms |
852 KB |
Output is correct |
67 |
Correct |
6 ms |
852 KB |
Output is correct |
68 |
Correct |
6 ms |
960 KB |
Output is correct |
69 |
Correct |
7 ms |
976 KB |
Output is correct |
70 |
Correct |
7 ms |
944 KB |
Output is correct |
71 |
Correct |
9 ms |
852 KB |
Output is correct |
72 |
Correct |
9 ms |
948 KB |
Output is correct |
73 |
Correct |
6 ms |
948 KB |
Output is correct |
74 |
Correct |
6 ms |
852 KB |
Output is correct |
75 |
Correct |
6 ms |
852 KB |
Output is correct |
76 |
Correct |
6 ms |
832 KB |
Output is correct |
77 |
Correct |
6 ms |
852 KB |
Output is correct |
78 |
Correct |
6 ms |
948 KB |
Output is correct |
79 |
Correct |
6 ms |
944 KB |
Output is correct |
80 |
Correct |
7 ms |
852 KB |
Output is correct |
81 |
Correct |
963 ms |
4324 KB |
Output is correct |
82 |
Correct |
951 ms |
4328 KB |
Output is correct |
83 |
Correct |
959 ms |
4308 KB |
Output is correct |
84 |
Correct |
955 ms |
4332 KB |
Output is correct |
85 |
Correct |
950 ms |
4308 KB |
Output is correct |
86 |
Correct |
930 ms |
4428 KB |
Output is correct |
87 |
Correct |
994 ms |
4324 KB |
Output is correct |
88 |
Correct |
109 ms |
4308 KB |
Output is correct |
89 |
Correct |
105 ms |
4328 KB |
Output is correct |
90 |
Correct |
248 ms |
4328 KB |
Output is correct |
91 |
Correct |
253 ms |
4308 KB |
Output is correct |
92 |
Correct |
498 ms |
4332 KB |
Output is correct |
93 |
Correct |
486 ms |
4328 KB |
Output is correct |
94 |
Correct |
730 ms |
4324 KB |
Output is correct |
95 |
Correct |
745 ms |
4328 KB |
Output is correct |
96 |
Correct |
868 ms |
4328 KB |
Output is correct |
97 |
Correct |
887 ms |
4308 KB |
Output is correct |
98 |
Correct |
643 ms |
4428 KB |
Output is correct |
99 |
Correct |
649 ms |
4308 KB |
Output is correct |
100 |
Correct |
643 ms |
4308 KB |
Output is correct |
101 |
Correct |
693 ms |
4328 KB |
Output is correct |
102 |
Correct |
682 ms |
4332 KB |
Output is correct |
103 |
Correct |
693 ms |
4328 KB |
Output is correct |
104 |
Correct |
718 ms |
4332 KB |
Output is correct |
105 |
Correct |
659 ms |
4328 KB |
Output is correct |