QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#413125 | #4230. Leaderboard Effect | ishmeal# | AC ✓ | 2943ms | 1865464kb | C++14 | 2.2kb | 2024-05-17 06:27:19 | 2024-05-17 06:27:21 |
Judging History
answer
#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
const double epsilon = 1e-10;
const int MAXT = 101;
const int MAXN = 17;
const int MAXPOW = 1 << MAXN;
// probs[i] = probability a team solves problem i at time ti.
double probs[MAXN];
// dp[ti][mask] = probability a team having read problems mask picks something to read at time ti.
double dp[MAXT][MAXPOW];
// dp2[ti][mask][i] = probability a team having read problems mask picks problem i to read at time ti.
double dp2[MAXT][MAXPOW][MAXN];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, t;
cin >> n >> t;
int r[n];
int c[n];
double p[n];
for (int i = 0; i < n; i++) {
cin >> r[i] >> c[i] >> p[i];
}
int pow2 = 1 << n;
for (int i = 0; i < n; i++) {
probs[i] = 0;
}
for (int ti = 0; ti <= t; ti++) {
for (int mask = 0; mask < pow2; mask++) {
dp[ti][mask] = 0;
for (int i = 0; i < n; i++) {
if (ti - r[i] - c[i] >= 0) {
double add = dp2[ti - r[i] - c[i]][mask][i] * p[i];
probs[i] += add;
dp[ti][mask] += add;
}
if (ti - r[i] >= 0) {
dp[ti][mask] += dp2[ti - r[i]][mask][i] * (1 - p[i]);
}
dp2[ti][mask][i] = 0;
}
}
if (ti == 0) {
dp[0][0] = 1;
}
for (int mask = 0; mask < pow2 - 1; mask++) {
double total = 0;
int cnt = 0;
for (int i = 0; i < n; i++) {
if (!(mask & (1 << i))) {
total += probs[i];
cnt++;
}
}
for (int i = 0; i < n; i++) {
int nmask = mask | (1 << i);
if (nmask != mask) {
double p_pick = total < epsilon ? ((double) 1 / cnt) : (probs[i] / total);
dp2[ti][nmask][i] += dp[ti][mask] * p_pick;
}
}
}
}
for (int i = 0; i < n; i++) {
cout << fixed << setprecision(10) << probs[i] << "\n";
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 134828kb
input:
4 42 10 10 0.75 10 10 0.75 10 12 1 10 12 1
output:
0.4562500000 0.4562500000 0.2968750000 0.2968750000
result:
ok 4 numbers
Test #2:
score: 0
Accepted
time: 0ms
memory: 134880kb
input:
4 42 10 12 0.75 10 12 0.75 10 10 1 10 10 1
output:
0.2031250000 0.2031250000 0.6832386364 0.6832386364
result:
ok 4 numbers
Test #3:
score: 0
Accepted
time: 0ms
memory: 313008kb
input:
5 100 40 60 0.6 40 61 1 10 40 0.3 10 40 0.4 10 40 0.5
output:
0.1200000000 0.0000000000 0.1126285714 0.1597396825 0.2064444444
result:
ok 5 numbers
Test #4:
score: 0
Accepted
time: 670ms
memory: 728308kb
input:
15 100 4 14 0.954205412740471 5 11 0.264054003774017 1 7 0.521673865442381 3 12 0.6756938980261 1 15 0.980129050876819 2 12 0.836645892885326 10 3 0.959863273940343 13 6 0.230786407526669 3 13 0.0575791282076707 6 5 0.706328060881614 1 15 0.662404274712202 2 13 0.715327416279894 11 2 0.9275847467499...
output:
0.5466883601 0.0555190182 0.3936213911 0.3508749198 0.6674244091 0.5712225129 0.7999522166 0.0400054043 0.0061450487 0.5512562318 0.2999890330 0.3912605833 0.7604749242 0.5188051813 0.0717487880
result:
ok 15 numbers
Test #5:
score: 0
Accepted
time: 1284ms
memory: 1142252kb
input:
16 100 1 8 0.203833126785817 1 10 0.551151943064124 1 12 0.996220861387656 1 7 0.198656409543208 2 2 0.467994369421028 8 3 0.201277956430612 1 10 0.33397726300295 1 8 0.223430703554389 3 12 0.715363922664928 9 6 0.883743052774488 1 9 0.51636293824285 2 7 0.00210327442137626 6 11 0.978989778915285 1 ...
output:
0.0858804807 0.4252927315 0.9374111521 0.0922249570 0.4339959385 0.0755229268 0.1734307964 0.1017529966 0.5349333393 0.7651388862 0.4085700308 0.0002345452 0.8374910988 0.1506327548 0.8891985447 0.7760512520
result:
ok 16 numbers
Test #6:
score: 0
Accepted
time: 1551ms
memory: 1244348kb
input:
16 100 36 30 0.246284470931766 40 2 0.00729886464249319 34 9 0.969806174971755 2 27 0.700168809611093 2 49 0.00964738878291982 11 13 0.843818712396597 23 15 0.015695164745825 2 11 0.860911871987035 8 39 0.759047449661107 33 17 0.156016479857797 5 40 0.704380590007194 2 36 0.0742940485679995 13 17 0....
output:
0.0224173644 0.0006719875 0.1881340045 0.2674021961 0.0008064522 0.4812071728 0.0015086240 0.7289006401 0.0935302469 0.0144157539 0.1004794522 0.0079053003 0.0161083459 0.0114644066 0.1934422483 0.1085405082
result:
ok 16 numbers
Test #7:
score: 0
Accepted
time: 0ms
memory: 311016kb
input:
2 100 44 23 0.344489870631275 18 13 0.617983603136949
output:
0.3444898706 0.6179836031
result:
ok 2 numbers
Test #8:
score: 0
Accepted
time: 2943ms
memory: 1865464kb
input:
17 100 1 6 0.618966248907732 1 6 0.126915204708293 4 7 0.35153234988752 2 3 0.0368548187261588 1 5 0.299571483949073 1 12 0.944530094804986 3 12 0.249408160616937 1 11 0.91317090384857 5 8 0.377638681694897 4 12 0.639080155811651 1 4 0.809300766237897 8 5 0.812731204986182 1 10 0.480107932016118 7 1...
output:
0.6097205987 0.0664162909 0.2759647935 0.0116316662 0.2653968739 0.9276187247 0.1104524533 0.9000228413 0.2724547775 0.5444190644 0.8075570096 0.7874382752 0.4241974780 0.4532898699 0.0710888474 0.0230506400 0.2766309939
result:
ok 17 numbers
Test #9:
score: 0
Accepted
time: 2625ms
memory: 1591908kb
input:
17 85 8 6 0.9977 1 4 0.9459 5 9 0.0733 2 9 0.759 9 6 0.921 5 6 0.2015 2 8 0.9407 8 10 0.7806 5 3 0.864 4 4 0.0777 9 3 0.9518 8 2 0.8221 10 9 0.2471 4 8 0.4679 7 6 0.603 3 2 0.4067 5 5 0.8879
output:
0.5867245193 0.9129534209 0.0065806169 0.4210560868 0.4607497916 0.0315030385 0.7498298624 0.2468980556 0.7416158859 0.0087165585 0.6343383380 0.5994076444 0.0309662643 0.1419017458 0.2262892673 0.2852029504 0.6812159526
result:
ok 17 numbers
Test #10:
score: 0
Accepted
time: 2561ms
memory: 1592552kb
input:
17 85 9 7 0.0563 7 7 0.1979 9 3 0.7689 1 6 0.0291 7 7 0.9631 5 8 0.847 8 6 0.6752 2 9 0.0396 4 2 0.6747 8 3 0.1071 8 4 0.5134 9 7 0.7491 6 8 0.3134 3 1 0.8355 4 5 0.5561 1 10 0.372 9 9 0.4515
output:
0.0054940768 0.0372377989 0.6294372534 0.0035434659 0.7810235280 0.6771579400 0.4108064335 0.0037438832 0.6424409296 0.0165533232 0.3038051233 0.4238316770 0.0861982873 0.8269709332 0.4612847085 0.1637608691 0.1285953725
result:
ok 17 numbers
Test #11:
score: 0
Accepted
time: 2510ms
memory: 1591028kb
input:
17 85 1 7 0.1344 5 8 0.99 8 3 0.437 4 9 0.1375 3 2 0.8208 1 8 0.5922 10 6 0.655 8 5 0.8043 2 5 0.8447 5 10 0.3305 9 3 0.725 1 8 0.0394 6 5 0.8091 8 7 0.6427 9 6 0.7282 4 7 0.1024 1 6 0.4222
output:
0.0271150339 0.7924371560 0.2061967781 0.0204431843 0.7974743934 0.4268788097 0.2852039460 0.5518833788 0.7928221404 0.0816198932 0.4982932540 0.0041219581 0.6430107504 0.2992580192 0.3866252447 0.0144745423 0.2706075742
result:
ok 17 numbers
Test #12:
score: 0
Accepted
time: 2352ms
memory: 1591868kb
input:
17 85 10 2 0.6556 3 1 0.7738 1 8 0.9047 3 10 0.9973 10 4 0.5266 8 1 0.4384 5 3 0.3559 3 6 0.7999 8 6 0.9665 3 4 0.142 7 5 0.0319 6 3 0.4056 6 10 0.0477 8 10 0.1334 5 8 0.8102 8 8 0.6 7 5 0.318
output:
0.3972891275 0.7614221310 0.8315202044 0.7808277980 0.1962448889 0.2540902360 0.1907046121 0.7036157862 0.6802808159 0.0355531412 0.0025953894 0.2112036588 0.0039547856 0.0144260609 0.5290304907 0.2182607455 0.0876844931
result:
ok 17 numbers
Test #13:
score: 0
Accepted
time: 2156ms
memory: 1865460kb
input:
17 100 10 41 0.986344070444954 38 40 0.13596976314146 23 65 0.589188420670698 23 41 0.862487981086339 66 62 0.756039635351495 84 82 0.466671597793749 17 74 0.451825236037525 97 49 0.785964886639839 76 26 0.432545432217108 10 33 0.495053202758143 35 72 0.437261903429889 55 95 0.333190022475783 83 56 ...
output:
0.0715579050 0.0085319511 0.0357815053 0.0574174662 0.0000000000 0.0000000000 0.0265779551 0.0000000000 0.0000000000 0.0761777549 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000
result:
ok 17 numbers
Test #14:
score: 0
Accepted
time: 2329ms
memory: 1865424kb
input:
17 100 52 66 0.608312285077897 77 36 0.182402129968963 43 16 0.906840075497175 75 100 0.508033408075313 25 60 0.688919263266595 84 59 0.17045120790047 75 9 0.831462171228754 16 69 0.185113485186001 71 54 0.372346884200038 90 65 0.235248490382517 62 50 0.917089563798644 47 45 0.717838729472597 56 51 ...
output:
0.0000000000 0.0000000000 0.0602828144 0.0000000000 0.0415535446 0.0000000000 0.0526422882 0.0111654904 0.0000000000 0.0000000000 0.0000000000 0.0426614281 0.0000000000 0.0450980714 0.0000000000 0.0397672348 0.0560748678
result:
ok 17 numbers
Test #15:
score: 0
Accepted
time: 0ms
memory: 128692kb
input:
5 40 10 8 0.9 10 9 0.9 10 10 0.9 10 11 0.9 10 12 0.9
output:
0.5385000000 0.3765000000 0.2415000000 0.2385000000 0.2385000000
result:
ok 5 numbers