#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
#define int double
#define sqrt sqrtl
using namespace std;
const long long oo = 1e9;
double sum, ans = 0, mx = 0, mn = 1000000000, num, pos;
/*
ViHHiPuh
(( `'-""``""-'` ))
)-__-_.._-__-(
/ --- (o _ o) --- \
\ .-* ( .0. ) *-. /
_'-. ,_ '=' _, .-'_
/ `;#'#'# - #'#'#;` \
\_)) -----'#'----- ((_/
# --------- #
'# ------- ------ #'
/..-'# ------- #'-.\
_\...-\'# -- #'/-.../_
((____)- '#' -(____))
cout << fixed << setprecision(6) << x;
freopen ( "sum.in", "r", stdin )
*/
long long n, m;
pair<int, int> a[ 501 ];
int dp[ 501 ][ 501 ];
main () {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> m;
for ( long long i = 1; i <= n; i ++ ) {
cin >> a[ i ].second >> a[ i ].first;
if ( a[ i ].first == -1 )
a[ i ].first = oo;
}
for ( long long i = 1; i <= n; i ++ )
dp[ 0 ][ i ] = oo;
ans = oo;
sort( a + 1, a + n + 1 );
for ( long long k = 0; k <= m; k ++ ) {
for ( long long i = 1; i <= n; i ++ ) {
for ( long long j = 1; j <= n; j ++ )
dp[ i ][ j ] = oo;
}
for ( long long i = 1; i <= n; i ++ ) {
num = i;
if ( num <= k )
dp[ i ][ 0 ] = dp[ i - 1 ][ 0 ] + a[ i ].first / num;
else
dp[ i ][ 0 ] = dp[ i - 1 ][ 0 ];
for ( long long j = 1; j <= min( i, m ); j ++ ) {
num = i - j;
if ( num <= k )
dp[ i ][ j ] = min( dp[ i - 1 ][ j - 1 ] + a[ i ].second / ( k + 1 ), dp[ i - 1 ][ j ] + a[ i ].first / num );
else
dp[ i ][ j ] = min( dp[ i - 1 ][ j - 1 ] + a[ i ].second / ( k + 1 ), dp[ i - 1 ][ j ] );
// cout << k << " " << i << " " << j << " - " << dp[ i ][ j ] << " " << num << "\n";
}
}
// cout << k << " - " << dp[ n ][ m - k ] << "\n";
ans = min( ans, dp[ n ][ m - k ] );
}
cout << fixed << setprecision(4) << ans;
}
Compilation message
Main.cpp:50:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
50 | main () {
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
328 KB |
Output is correct |
5 |
Correct |
13 ms |
2292 KB |
Output is correct |
6 |
Correct |
35 ms |
2260 KB |
Output is correct |
7 |
Correct |
87 ms |
2276 KB |
Output is correct |
8 |
Correct |
155 ms |
2268 KB |
Output is correct |
9 |
Correct |
181 ms |
2276 KB |
Output is correct |
10 |
Correct |
118 ms |
2260 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
328 KB |
Output is correct |
5 |
Correct |
13 ms |
2292 KB |
Output is correct |
6 |
Correct |
35 ms |
2260 KB |
Output is correct |
7 |
Correct |
87 ms |
2276 KB |
Output is correct |
8 |
Correct |
155 ms |
2268 KB |
Output is correct |
9 |
Correct |
181 ms |
2276 KB |
Output is correct |
10 |
Correct |
118 ms |
2260 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
39 ms |
2260 KB |
Output is correct |
13 |
Correct |
42 ms |
2276 KB |
Output is correct |
14 |
Correct |
42 ms |
2260 KB |
Output is correct |
15 |
Correct |
148 ms |
2272 KB |
Output is correct |
16 |
Correct |
134 ms |
2268 KB |
Output is correct |
17 |
Correct |
130 ms |
2276 KB |
Output is correct |
18 |
Correct |
186 ms |
2260 KB |
Output is correct |
19 |
Correct |
179 ms |
2276 KB |
Output is correct |
20 |
Correct |
176 ms |
2272 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
328 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 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 |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
328 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 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 |
1 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 |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
324 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
328 KB |
Output is correct |
26 |
Correct |
1 ms |
324 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
332 KB |
Output is correct |
30 |
Correct |
0 ms |
340 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 |
328 KB |
Output is correct |
35 |
Correct |
0 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
332 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 |
0 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
328 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 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 |
1 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 |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
324 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
328 KB |
Output is correct |
26 |
Correct |
1 ms |
324 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
0 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
332 KB |
Output is correct |
30 |
Correct |
0 ms |
340 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 |
328 KB |
Output is correct |
35 |
Correct |
0 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
332 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 |
0 ms |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
708 KB |
Output is correct |
42 |
Correct |
1 ms |
724 KB |
Output is correct |
43 |
Correct |
1 ms |
724 KB |
Output is correct |
44 |
Correct |
1 ms |
724 KB |
Output is correct |
45 |
Correct |
1 ms |
596 KB |
Output is correct |
46 |
Correct |
1 ms |
724 KB |
Output is correct |
47 |
Correct |
2 ms |
596 KB |
Output is correct |
48 |
Correct |
2 ms |
712 KB |
Output is correct |
49 |
Correct |
2 ms |
724 KB |
Output is correct |
50 |
Correct |
2 ms |
596 KB |
Output is correct |
51 |
Correct |
3 ms |
596 KB |
Output is correct |
52 |
Correct |
3 ms |
724 KB |
Output is correct |
53 |
Correct |
2 ms |
712 KB |
Output is correct |
54 |
Correct |
2 ms |
724 KB |
Output is correct |
55 |
Correct |
2 ms |
724 KB |
Output is correct |
56 |
Correct |
2 ms |
724 KB |
Output is correct |
57 |
Correct |
2 ms |
596 KB |
Output is correct |
58 |
Correct |
2 ms |
724 KB |
Output is correct |
59 |
Correct |
2 ms |
724 KB |
Output is correct |
60 |
Correct |
3 ms |
724 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
194 ms |
2260 KB |
Output is correct |
2 |
Correct |
194 ms |
2276 KB |
Output is correct |
3 |
Correct |
183 ms |
2280 KB |
Output is correct |
4 |
Correct |
195 ms |
2280 KB |
Output is correct |
5 |
Correct |
189 ms |
2244 KB |
Output is correct |
6 |
Correct |
179 ms |
2276 KB |
Output is correct |
7 |
Correct |
187 ms |
2280 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
328 KB |
Output is correct |
5 |
Correct |
13 ms |
2292 KB |
Output is correct |
6 |
Correct |
35 ms |
2260 KB |
Output is correct |
7 |
Correct |
87 ms |
2276 KB |
Output is correct |
8 |
Correct |
155 ms |
2268 KB |
Output is correct |
9 |
Correct |
181 ms |
2276 KB |
Output is correct |
10 |
Correct |
118 ms |
2260 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
39 ms |
2260 KB |
Output is correct |
13 |
Correct |
42 ms |
2276 KB |
Output is correct |
14 |
Correct |
42 ms |
2260 KB |
Output is correct |
15 |
Correct |
148 ms |
2272 KB |
Output is correct |
16 |
Correct |
134 ms |
2268 KB |
Output is correct |
17 |
Correct |
130 ms |
2276 KB |
Output is correct |
18 |
Correct |
186 ms |
2260 KB |
Output is correct |
19 |
Correct |
179 ms |
2276 KB |
Output is correct |
20 |
Correct |
176 ms |
2272 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 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 |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
0 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
340 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
31 |
Correct |
1 ms |
328 KB |
Output is correct |
32 |
Correct |
1 ms |
332 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 |
340 KB |
Output is correct |
36 |
Correct |
1 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 |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
340 KB |
Output is correct |
42 |
Correct |
1 ms |
324 KB |
Output is correct |
43 |
Correct |
1 ms |
340 KB |
Output is correct |
44 |
Correct |
1 ms |
340 KB |
Output is correct |
45 |
Correct |
1 ms |
328 KB |
Output is correct |
46 |
Correct |
1 ms |
324 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
0 ms |
340 KB |
Output is correct |
49 |
Correct |
1 ms |
332 KB |
Output is correct |
50 |
Correct |
0 ms |
340 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 |
328 KB |
Output is correct |
55 |
Correct |
0 ms |
340 KB |
Output is correct |
56 |
Correct |
1 ms |
332 KB |
Output is correct |
57 |
Correct |
1 ms |
340 KB |
Output is correct |
58 |
Correct |
1 ms |
340 KB |
Output is correct |
59 |
Correct |
1 ms |
340 KB |
Output is correct |
60 |
Correct |
0 ms |
340 KB |
Output is correct |
61 |
Correct |
1 ms |
708 KB |
Output is correct |
62 |
Correct |
1 ms |
724 KB |
Output is correct |
63 |
Correct |
1 ms |
724 KB |
Output is correct |
64 |
Correct |
1 ms |
724 KB |
Output is correct |
65 |
Correct |
1 ms |
596 KB |
Output is correct |
66 |
Correct |
1 ms |
724 KB |
Output is correct |
67 |
Correct |
2 ms |
596 KB |
Output is correct |
68 |
Correct |
2 ms |
712 KB |
Output is correct |
69 |
Correct |
2 ms |
724 KB |
Output is correct |
70 |
Correct |
2 ms |
596 KB |
Output is correct |
71 |
Correct |
3 ms |
596 KB |
Output is correct |
72 |
Correct |
3 ms |
724 KB |
Output is correct |
73 |
Correct |
2 ms |
712 KB |
Output is correct |
74 |
Correct |
2 ms |
724 KB |
Output is correct |
75 |
Correct |
2 ms |
724 KB |
Output is correct |
76 |
Correct |
2 ms |
724 KB |
Output is correct |
77 |
Correct |
2 ms |
596 KB |
Output is correct |
78 |
Correct |
2 ms |
724 KB |
Output is correct |
79 |
Correct |
2 ms |
724 KB |
Output is correct |
80 |
Correct |
3 ms |
724 KB |
Output is correct |
81 |
Correct |
194 ms |
2260 KB |
Output is correct |
82 |
Correct |
194 ms |
2276 KB |
Output is correct |
83 |
Correct |
183 ms |
2280 KB |
Output is correct |
84 |
Correct |
195 ms |
2280 KB |
Output is correct |
85 |
Correct |
189 ms |
2244 KB |
Output is correct |
86 |
Correct |
179 ms |
2276 KB |
Output is correct |
87 |
Correct |
187 ms |
2280 KB |
Output is correct |
88 |
Correct |
11 ms |
2260 KB |
Output is correct |
89 |
Correct |
12 ms |
2248 KB |
Output is correct |
90 |
Correct |
35 ms |
2260 KB |
Output is correct |
91 |
Correct |
32 ms |
2276 KB |
Output is correct |
92 |
Correct |
80 ms |
2260 KB |
Output is correct |
93 |
Correct |
82 ms |
2296 KB |
Output is correct |
94 |
Correct |
131 ms |
2260 KB |
Output is correct |
95 |
Correct |
125 ms |
2260 KB |
Output is correct |
96 |
Correct |
182 ms |
2260 KB |
Output is correct |
97 |
Correct |
178 ms |
2284 KB |
Output is correct |
98 |
Correct |
114 ms |
2272 KB |
Output is correct |
99 |
Correct |
142 ms |
2252 KB |
Output is correct |
100 |
Correct |
133 ms |
2248 KB |
Output is correct |
101 |
Correct |
119 ms |
2272 KB |
Output is correct |
102 |
Correct |
139 ms |
2280 KB |
Output is correct |
103 |
Correct |
132 ms |
2276 KB |
Output is correct |
104 |
Correct |
121 ms |
2276 KB |
Output is correct |
105 |
Correct |
146 ms |
2280 KB |
Output is correct |