QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#579002 | #9315. Rainbow Bracket Sequence | zzpcd | RE | 3ms | 3864kb | C++20 | 4.6kb | 2024-09-21 00:57:11 | 2024-09-21 00:57:11 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using s64 = long long;
const int MN = 315;
namespace MCMF {
const int inf = 0x7fffffff;
typedef pair<s64, int> P;
int S, T;
int cnt = 1, n;
int h[MN], cur[MN];
bool vis[MN];
s64 dis[MN], ep[MN];
struct edge {
int to, nxt, f, w;
}e[MN << 1]; // remind size of edge
void insw(int x, int y, int f, int c) {
e[++cnt].nxt = h[x]; h[x] = cnt; e[cnt].to = y; e[cnt].f = f; e[cnt].w = c;
e[++cnt].nxt = h[y]; h[y] = cnt; e[cnt].to = x; e[cnt].f = 0; e[cnt].w = -c;
}
void init(int N, int s = -1, int t = -1) {
n = N;
if(s == -1) S = ++n;
else S = s;
if(t == -1) T = ++n;
else T = t;
cnt = 1;
fill(h, h + 1 + n, 0);
}
void SPFA() {
fill(ep, ep + 1 + n, 0);
fill(vis, vis + 1 + n, 0);
deque<int> que;
for(int i = 1; i <= n; i++) que.push_back(i), vis[i] = 1;
while(!que.empty()) {
int x = que.front();
que.pop_front();
vis[x] = 0;
for(int i = h[x]; i; i = e[i].nxt) {
int y = e[i].to;
if(!e[i].f || ep[y] <= ep[x] + e[i].w) continue;
ep[y] = ep[x] + e[i].w;
if(!vis[y]) {
vis[y] = 1;
if(!que.empty() && ep[y] < ep[que.front()]) que.push_front(y);
else que.push_back(y);
}
}
}
return;
}
bool dijkstra() {
fill(dis, dis + 1 + n, -1);
dis[S] = 0;
priority_queue<P, vector<P>, greater<P>> pq;
pq.push(P(0, S));
while(!pq.empty()) {
s64 dd= pq.top().first; int x = pq.top().second;
pq.pop();
if(dd != dis[x]) continue;
for(int i = h[x]; i; i = e[i].nxt) {
if(!e[i].f) continue;
int y = e[i].to;
if(dis[y] != -1 && dis[y] <= dd + e[i].w + ep[x] - ep[y]) continue;
dis[y] = dd + e[i].w + ep[x] - ep[y];
pq.push(P(dis[y], y));
}
}
memcpy(cur, h, (n + 2) << 2);
return dis[T] != -1;
}
int Dinic(int x, int f, s64 &nowc) {
if(x == T) return f;
vis[x] = 1;
int ret = 0;
for(int &i = cur[x]; i; i = e[i].nxt) {
int y = e[i].to;
if(vis[y] || !e[i].f || dis[y] != dis[x] + e[i].w + ep[x] - ep[y]) continue;
int u = Dinic(y, min(f, e[i].f), nowc);
ret += u; f -= u;
e[i].f -= u; e[i ^ 1].f += u;
nowc += (s64)e[i].w * u;
if(!f) break;
}
vis[x] = 0;
return ret;
}
P calc() { // return {cost, flow}
SPFA();
// for(int i = 1; i <= n; i++) cerr << i << " : " << ep[i] << '\n';
P ret(0, 0);
while(dijkstra()) {
ret.second += Dinic(S, inf, ret.first);
for(int i = 1; i <= n; i++) ep[i] += dis[i];
}
return ret;
}
}
int n, m, l[MN], c[MN];
s64 v[MN];
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int T = 1;
cin >> T;
while(T--) {
cin >> n >> m;
MCMF::init(2 * n + m + 1);
for(int i = 1; i <= m; i++) {
cin >> l[i];
}
vector tong(m + 1, vector<int>());
vector<int> du(2 * n + m + 5, 0);
for(int i = 1; i <= 2 * n; i++)
cin >> c[i], tong[c[i]].push_back(i);
for(int i = 1; i <= 2 * n; i++)
cin >> v[i];
v[2 * n + 1] = 0;
s64 ans = 0;
int need = 0;
int s = 2 * n + m + 1;
for(int i = 1; i <= m; i++) {
MCMF::insw(s, i + 2 * n, n - l[i], 0);
du[s] -= l[i];
du[i + 2 * n] += l[i];
// ans += -l[i] * v[i];
}
for(int i = 1; i <= 2 * n; i++) {
int nxt = (i == 2 * n ? s : (i + 1));
MCMF::insw(i, nxt, n - (i + 1) / 2, 0);
MCMF::insw(2 * n + c[i], i, 1, -v[i]);
du[i] -= (i + 1) / 2;
du[nxt] += (i + 1) / 2;
}
for(int i = 1; i <= s; i++) {
if(du[i] > 0) MCMF::insw(MCMF::S, i, du[i], 0), need += du[i];
if(du[i] < 0) MCMF::insw(i, MCMF::T, -du[i], 0);
}
auto [tmpc, tmpf] = MCMF::calc();
ans += tmpc;
// cerr << tmpc << ' ' << tmpf << '\n';
if(need == tmpf) cout << -ans << '\n';
else cout << "-1\n";
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3616kb
input:
2 3 2 1 2 1 2 2 2 1 2 3 1 4 2 2 1 3 2 2 2 1 2 2 2 1 2 3 1 4 2 2 1
output:
9 -1
result:
ok 2 number(s): "9 -1"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3840kb
input:
50 8 6 0 2 2 0 3 1 3 5 1 1 5 3 5 2 3 2 2 1 2 2 4 6 998133227 879226371 59632864 356493387 62611196 827258251 296576565 204244054 812713672 780267148 614679390 447700005 102067050 544546349 116002772 761999375 1 1 1 1 1 343766215 374461155 3 1 2 1 1 1 1 1 1 796323508 303640854 701432076 853325162 610...
output:
-1 343766215 2351080746 3426965219 -1 -1 1351561190 2539318868 1013080942 4656646546 -1 -1 2231197660 2719131728 3983627641 4712174168 -1 1046749330 6115214757 3920988203 -1 3902088946 -1 2566553992 5268471900 5977120748 7505501534 -1 5054275471 1467678317 883992368 1044562986 -1 4024634503 -1 14472...
result:
ok 50 numbers
Test #3:
score: 0
Accepted
time: 1ms
memory: 3864kb
input:
25 20 4 0 0 0 1 2 2 2 2 4 4 4 1 2 2 2 1 3 4 1 3 4 4 3 1 3 2 1 4 2 2 4 1 2 2 3 3 4 1 3 1 4 1 2 1 569363376 821862673 89663213 862407789 442940149 823902948 903631686 838830270 645793571 397350060 806574247 373166844 448916252 435880456 969841293 998227951 276194969 654967687 396909705 696186514 16992...
output:
16418796680 10558213381 -1 1502390329 8534183652 13571062458 8007768610 12656453595 3378659874 8410746077 12352187024 5743130624 5952844559 2285684441 4242613506 836778846 4838639494 8586807028 8535185475 8089358175 5627473863 14399529671 -1 11483578919 4919631490
result:
ok 25 numbers
Test #4:
score: 0
Accepted
time: 1ms
memory: 3620kb
input:
83 6 5 1 0 1 1 0 2 4 4 5 3 2 4 5 3 3 3 3 597659626 649040970 33207011 223207847 960704874 418600362 658594226 417168695 767527655 622701955 867509363 235369723 6 2 0 0 1 1 2 2 2 2 1 1 1 2 2 1 405752009 976807343 267881918 26193206 947664189 555835767 587219021 231445627 755417826 541362608 846129246...
output:
-1 4518989634 3550182642 4529809699 4042429510 4145000717 -1 3635082691 -1 -1 3476472607 3732904849 3631909633 4479534795 3586223781 3380039505 2946284506 3615784040 -1 -1 -1 4940773463 3195952843 4073152216 4177883697 3398540362 3578975642 4308395607 -1 3078447178 3069102942 3135294474 5256676097 -...
result:
ok 83 numbers
Test #5:
score: 0
Accepted
time: 2ms
memory: 3596kb
input:
71 7 4 0 1 0 4 3 4 1 1 4 4 2 4 1 1 1 4 4 4 580852652 638740575 585501313 439482552 637837864 335796176 447934224 259084035 778210267 469729886 908657968 750731414 508195022 701461051 7 6 0 1 1 0 0 1 3 2 4 3 5 3 1 1 5 4 3 1 6 1 198076752 601490845 123074777 392892100 148645775 938575995 355185760 558...
output:
4300550873 4711297430 -1 4468072610 4652801753 4661069155 5134971483 4367382968 4983190626 3065242360 -1 -1 4834379200 4355918462 -1 3592789392 3058869770 -1 3825913893 -1 4785350296 -1 4759459279 5342744097 4716826205 4873131448 5329193547 4821943641 3777324532 4115469556 -1 -1 -1 5061832610 520025...
result:
ok 71 numbers
Test #6:
score: 0
Accepted
time: 0ms
memory: 3508kb
input:
62 8 3 0 2 0 3 3 3 1 1 1 3 2 1 2 2 1 1 2 1 1 222368048 906033133 8623893 807375696 461796409 362923880 194114590 733391789 137574156 670510137 237249112 673135534 595041001 875171159 112263159 649035661 8 6 2 1 0 0 0 0 3 5 2 2 1 3 3 3 6 4 5 5 1 2 5 4 28938721 556768926 23366504 887715271 624732370 3...
output:
5349781905 4269103485 4384563617 5171071054 4895598910 4667548481 -1 4157414045 -1 3927911942 -1 5127481462 5534185037 6071114899 4515756162 5965926191 -1 5617252300 5920664214 5826871785 5730385164 5947153970 5426721265 5820040011 5677486289 5193366586 6129016249 5739984903 5993708705 5520537026 54...
result:
ok 62 numbers
Test #7:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
55 9 9 2 2 0 0 0 0 0 2 0 6 2 3 9 5 4 2 4 1 1 4 7 1 4 5 8 6 2 907208811 754008138 161288468 562810007 149992530 997421612 144383292 832081887 228097972 446662965 77258752 375836694 743196568 527846851 580675905 438791943 977960026 39388076 9 6 0 1 0 0 0 0 5 3 3 4 3 6 5 4 6 5 2 5 6 5 5 1 2 2 861149655...
output:
-1 5600105080 -1 7505123959 7048625501 4827971490 -1 7031642652 -1 6001013535 -1 -1 6353971413 5896906204 3896102243 6540293759 5621534278 6599175212 -1 6721932183 6965230904 5681597954 8167088460 5632185532 -1 4750725522 6285591217 6320310809 6388859035 4686377743 5728065266 5503485599 6260485694 6...
result:
ok 55 numbers
Test #8:
score: 0
Accepted
time: 2ms
memory: 3524kb
input:
50 10 8 0 0 1 0 0 0 1 0 1 6 7 7 2 2 1 1 3 1 1 3 7 5 4 1 8 4 7 2 535526356 404334728 653535984 998133227 879226371 59632864 356493387 62611196 827258251 296576565 204244054 812713672 780267148 614679390 447700005 102067050 544546349 116002772 761999375 546951131 10 5 0 0 1 1 0 4 5 5 3 5 1 3 3 5 1 1 5...
output:
7267674502 6912276073 -1 -1 8427372986 -1 7057744914 6452405474 7564223610 7193916415 -1 5496837745 6671753900 7137256654 6574886409 7690341704 7357840728 8164970807 7172570060 6778745196 7668051341 6936083804 7305907682 7631088969 5717910532 6156605721 6923807013 -1 8207034493 -1 7418567782 6923770...
result:
ok 50 numbers
Test #9:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
33 15 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 985238289 459697693 970988548 370603489 160471107 36299429 908579552 62669495 649913003 478356148 805843616 136680216 158560673 261854484 857048420 32835236 430050478 327696352 417017537 857880465 568473106 750242567 865990206 869...
output:
11069294141 9757752433 10517453854 10675484732 9851733289 11571987501 10382709663 11006679388 9835650684 10482963923 10190220836 11857634113 -1 -1 10077553084 9896319722 11821564137 11828952526 9761971634 9940132164 -1 -1 9227926173 13037241524 11565236192 11800412693 12028054248 11502933189 9949512...
result:
ok 33 numbers
Test #10:
score: 0
Accepted
time: 3ms
memory: 3716kb
input:
25 20 20 3 0 0 1 0 0 0 0 0 3 0 0 1 2 0 1 0 2 2 4 12 19 17 19 14 5 16 6 6 20 13 2 14 7 19 16 17 7 13 16 9 6 5 16 13 13 9 9 8 6 10 11 20 7 4 12 16 13 11 9 654967687 396909705 696186514 169923749 8142639 81507010 67587218 966803487 991350519 551259762 962079443 918589 708293964 213990501 934701547 8468...
output:
-1 14023274173 12588200963 13988453624 15030243485 13076569052 -1 -1 13842307153 -1 12832546330 14189266584 16492323989 16163650514 14012035305 -1 -1 -1 13929001098 13862644942 -1 15246522629 -1 13299413733 -1
result:
ok 25 numbers
Test #11:
score: -100
Runtime Error
input:
5 100 15 3 5 8 6 7 7 5 3 2 6 5 3 11 4 8 8 13 6 13 2 3 1 8 15 12 13 14 10 12 4 4 8 8 9 2 15 3 4 10 8 5 2 5 11 11 2 13 10 7 12 11 4 2 9 4 15 5 15 13 9 6 7 6 2 12 6 1 6 13 9 7 2 2 11 11 10 1 3 12 8 7 2 13 2 5 3 13 5 11 5 2 3 1 14 7 11 5 11 2 14 2 14 6 4 6 3 8 14 4 8 3 14 10 7 8 3 6 3 10 4 15 1 7 7 15 7...