//Challenge: Accepted
#include <bits/stdc++.h>
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
while (l != r) cout << *l << " ", l++;
cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 505
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
pii a[maxn];
const double inf = 1e9;
double dp[maxn][maxn];
int main() {
io
int n, k;
cin >> n >> k;
for (int i = 0;i < n;i++) {
cin >> a[i].ff >> a[i].ss;
if (a[i].ss == -1) a[i].ss = 1<<30;
}
sort(a, a + n, [&] (pii x, pii y){return (x.ss == y.ss ? x.ff > y.ff : x.ss < y.ss);});
double ans = 1e9;
for (int i = 0;i <= k;i++) {
vector<pii> b;
for (int j = n-1;j >= i;j--) {
b.push_back(a[j]);
}
sort(b.begin(), b.end());
vector<pii> v;
for (int j = 0;j < i;j++) v.push_back(a[j]);
for (int j = 0;j < k - i;j++) v.push_back(b[j]);
sort(v.begin(), v.end(), [&](pii x, pii y){return x.ss < y.ss;});
for (int c = 0;c < k;c++) {
double tmp = 0;
for (int j = 0;j < k;j++) tmp += double(v[j].ff) / (c + 1);
for (int x = 0;x <= k;x++) {
for (int y = 0;y <= k;y++) dp[x][y] = inf;
}
dp[0][0] = 0;
for (int x = 1;x <= k;x++) {
for (int y = 0;y <= k;y++) {
dp[x][y] = dp[x-1][y];
if (y) {
dp[x][y] = min(dp[x][y], dp[x-1][y-1] - (double(v[x-1].ff)/(c+1)) + (double)v[x-1].ss/y);
}
}
}
//debug(i, cur, tmp);
debug(dp[k][c], tmp);
ans = min(ans, dp[k][c] + tmp);
}
if (k == n) break;
}
cout << fixed << setprecision(10) << ans << "\n";
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:12:20: warning: statement has no effect [-Wunused-value]
12 | #define debug(...) 0
| ^
Main.cpp:62:4: note: in expansion of macro 'debug'
62 | debug(dp[k][c], tmp);
| ^~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
28 ms |
460 KB |
Output is correct |
| 6 |
Correct |
921 ms |
820 KB |
Output is correct |
| 7 |
Execution timed out |
2583 ms |
1228 KB |
Time limit exceeded |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
28 ms |
460 KB |
Output is correct |
| 6 |
Correct |
921 ms |
820 KB |
Output is correct |
| 7 |
Execution timed out |
2583 ms |
1228 KB |
Time limit exceeded |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
272 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
272 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
0 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
0 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
344 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
336 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
336 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
1 ms |
332 KB |
Output is correct |
| 37 |
Correct |
1 ms |
332 KB |
Output is correct |
| 38 |
Correct |
1 ms |
332 KB |
Output is correct |
| 39 |
Correct |
1 ms |
332 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
272 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| 17 |
Correct |
0 ms |
332 KB |
Output is correct |
| 18 |
Correct |
0 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
0 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
340 KB |
Output is correct |
| 27 |
Correct |
1 ms |
344 KB |
Output is correct |
| 28 |
Correct |
1 ms |
340 KB |
Output is correct |
| 29 |
Correct |
1 ms |
336 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
336 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
1 ms |
332 KB |
Output is correct |
| 37 |
Correct |
1 ms |
332 KB |
Output is correct |
| 38 |
Correct |
1 ms |
332 KB |
Output is correct |
| 39 |
Correct |
1 ms |
332 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
1 ms |
332 KB |
Output is correct |
| 42 |
Correct |
1 ms |
332 KB |
Output is correct |
| 43 |
Correct |
4 ms |
332 KB |
Output is correct |
| 44 |
Correct |
5 ms |
332 KB |
Output is correct |
| 45 |
Correct |
25 ms |
460 KB |
Output is correct |
| 46 |
Correct |
30 ms |
460 KB |
Output is correct |
| 47 |
Correct |
68 ms |
580 KB |
Output is correct |
| 48 |
Correct |
67 ms |
564 KB |
Output is correct |
| 49 |
Correct |
148 ms |
624 KB |
Output is correct |
| 50 |
Correct |
161 ms |
620 KB |
Output is correct |
| 51 |
Correct |
5 ms |
716 KB |
Output is correct |
| 52 |
Correct |
6 ms |
716 KB |
Output is correct |
| 53 |
Correct |
72 ms |
556 KB |
Output is correct |
| 54 |
Correct |
69 ms |
560 KB |
Output is correct |
| 55 |
Correct |
67 ms |
556 KB |
Output is correct |
| 56 |
Correct |
69 ms |
460 KB |
Output is correct |
| 57 |
Correct |
68 ms |
460 KB |
Output is correct |
| 58 |
Correct |
74 ms |
560 KB |
Output is correct |
| 59 |
Correct |
79 ms |
560 KB |
Output is correct |
| 60 |
Correct |
72 ms |
460 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
443 ms |
2288 KB |
Output is correct |
| 2 |
Correct |
472 ms |
2292 KB |
Output is correct |
| 3 |
Correct |
432 ms |
2292 KB |
Output is correct |
| 4 |
Correct |
419 ms |
2292 KB |
Output is correct |
| 5 |
Correct |
438 ms |
2308 KB |
Output is correct |
| 6 |
Correct |
430 ms |
2292 KB |
Output is correct |
| 7 |
Correct |
462 ms |
2300 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
28 ms |
460 KB |
Output is correct |
| 6 |
Correct |
921 ms |
820 KB |
Output is correct |
| 7 |
Execution timed out |
2583 ms |
1228 KB |
Time limit exceeded |
| 8 |
Halted |
0 ms |
0 KB |
- |
