QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#783101 | #9810. Obliviate, Then Reincarnate | KobicGend | WA | 380ms | 64328kb | C++23 | 3.4kb | 2024-11-25 23:25:43 | 2024-11-25 23:25:44 |
Judging History
This is the latest submission verdict.
- [2024-11-26 23:19:26]
- hack成功,自动添加数据
- (/hack/1260)
- [2024-11-25 23:25:43]
- Submitted
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
struct SCC {
int n, unix, tot;
vector<vector<int>> E;
vector<int> dfn, low, bel, stk;
SCC(int n) : n(n), unix(0), tot(0), E(n), dfn(n, -1), low(n), bel(n, -1) {}
void add(int u, int v) {
E[u].push_back(v);
}
void dfs(int u) {
dfn[u] = low[u] = unix++; // 记录DFS序
stk.push_back(u);
// DP更新low[u]
for (auto& v : E[u]) {
if (dfn[v] == -1) dfs(v), low[u] = min(low[u], low[v]);
else if (bel[v] == -1) low[u] = min(low[u], dfn[v]);
}
// u是SCC的根
if (dfn[u] == low[u]) {
int v;
do {
v = stk.back();
stk.pop_back(); // 出栈
bel[v] = tot; // 记录u的子节点的根为u
} while (v != u); // 不断弹出直到根u弹出为止
tot++; // 记录SCC的数量
}
}
struct Graph {
int n;
vector<vector<int>> E;
vector<int> ecnt, pcnt, bel;
Graph(int n) : n(n), E(n), ecnt(n), pcnt(n) {}
};
Graph work() {
for (int u = 0; u < n; u++) {
if (dfn[u] == -1) dfs(u);
}
Graph G(tot);
G.bel = bel;
for (int u = 0; u < n; u++) {
for (auto& v : E[u]) {
if (bel[u] != bel[v]) G.E[bel[u]].push_back(bel[v]); // bel[u]总是小于p[v]
else G.ecnt[bel[u]]++;
}
G.pcnt[bel[u]]++;
}
for (auto& vec : G.E) {
sort(vec.begin(), vec.end());
vec.erase(unique(vec.begin(), vec.end()), vec.end());
}
return G;
}
template<typename T>
vector<T> compress(const vector<T>& w) {
vector<T> res(tot);
for (int u = 0; u < n; u++) {
res[bel[u]] += w[u];
}
return res;
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr), cout.tie(nullptr);
int n, m, q;
cin >> n >> m >> q;
vector<vector<pair<int, int>>> E(n);
SCC G(n);
while (m--) {
int u, w;
cin >> u >> w;
int v = u + w;
u = (u % n + n) % n;
v = (v % n + n) % n;
G.add(u, v);
E[u].push_back({ w, v });
}
vector<int> vis(n);
vector<ll> val(n);
for (int u = n - 1; u >= 0; u--) {
if (vis[u]) continue;
vis[u] = 1;
queue<int> Q;
Q.push(u);
while (!Q.empty()) {
int u = Q.front(); Q.pop();
for (auto [w, v] : E[u]) {
if (vis[v]) continue;
vis[v] = 1;
val[v] = val[u] + w;
Q.push(v);
}
}
}
auto g = G.work();
vector<int> dp(g.n);
for (int u = 0; u < n; u++) {
for (auto [w, v] : E[u]) {
if (g.bel[u] == g.bel[v] && val[u] + w != val[v]) {
dp[g.bel[u]] = 1;
}
}
}
for (int u = 0; u < g.n; u++) {
for (auto v : g.E[u]) {
dp[u] |= dp[v];
}
}
while (q--) {
int u;
cin >> u;
u = (u % n + n) % n;
cout << (dp[g.bel[u]] ? "Yes" : "No") << endl;
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3624kb
input:
3 2 3 1 1 -1 3 1 2 3
output:
Yes Yes No
result:
ok 3 tokens
Test #2:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
3 2 3 1 1 -1 0 1 2 3
output:
No No No
result:
ok 3 tokens
Test #3:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3852kb
input:
3 2 3 0 1000000000 1 -1000000000 -1000000000 0 -1000000000
output:
No No No
result:
ok 3 tokens
Test #5:
score: 0
Accepted
time: 259ms
memory: 21188kb
input:
50134 500000 500000 -154428638 -283522863 -186373509 -327130969 154999046 46750274 -933523447 349415487 -437683609 140099255 864996699 -262318199 811293034 -264299324 120273173 52410685 874944410 -52048424 445049930 -803690605 -138111276 -104634331 720288580 126597671 471164416 -348777147 -356502322...
output:
No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No ...
result:
ok 500000 tokens
Test #6:
score: 0
Accepted
time: 304ms
memory: 28620kb
input:
100848 500000 500000 720352587 361776806 231853504 -933882325 960971230 -83519300 -152772415 -631132247 842871215 -666621297 857194330 -754943024 -698506963 -705416545 -3551931 -927937446 628710320 -942247987 674921043 847145884 -325629529 475694308 -339363446 686789318 236702996 654762989 420412365...
output:
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Y...
result:
ok 500000 tokens
Test #7:
score: 0
Accepted
time: 280ms
memory: 34868kb
input:
150017 500000 500000 -421117558 -111455068 -339650079 -834968786 -41718919 419434475 -574669254 477810078 -208090630 898829660 960273942 388265109 -125813433 327374640 360078728 -43670454 325384591 -821490639 180403987 -234797747 -66837706 246624381 691417200 -488557843 -12157264 809720468 -27690539...
output:
No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No ...
result:
ok 500000 tokens
Test #8:
score: 0
Accepted
time: 335ms
memory: 41240kb
input:
200806 500000 500000 -258823842 -746938452 767141873 239212613 -636327282 608642297 32878678 -599637555 -886750171 266284414 -305571379 -530753894 -479699957 -314474638 -314368519 891752869 -532306854 949604876 -786780332 924096014 881624655 -427208447 -828777932 982410017 -993666003 -964783795 4739...
output:
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes...
result:
ok 500000 tokens
Test #9:
score: 0
Accepted
time: 338ms
memory: 48376kb
input:
250967 500000 500000 -259603037 -147096086 -522981205 -196517864 -381078674 -71123846 -855834769 247956205 141305563 -185585163 733025073 -330336665 -229023675 23759681 74736395 20184402 -670373808 -63240239 -334376006 -287990431 -465875753 583301785 964517056 1580583 -855645538 -487116442 -65247474...
output:
No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No ...
result:
ok 500000 tokens
Test #10:
score: 0
Accepted
time: 343ms
memory: 56048kb
input:
300375 500000 500000 793181826 -619804723 -986427452 134261865 437562931 -794737754 -521408178 -508399450 606976759 277928484 -519111960 -227118711 153586118 -586261112 -508917435 -466941695 249860836 -422755184 -126335863 519019663 645935801 -107887022 -924300803 48366918 -355121282 -13333421 -1403...
output:
No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No ...
result:
ok 500000 tokens
Test #11:
score: -100
Wrong Answer
time: 380ms
memory: 64328kb
input:
350925 500000 500000 -505116063 -14955865 116307759 490825592 484543615 734519563 -445218662 -80035005 -85982781 420310805 -592881015 849216294 406362727 -484878521 -718889987 282061741 865119022 -903485039 240534334 517849261 -278659735 202074249 788989155 291446892 683706893 -217476533 -23842796 -...
output:
Yes No No No No No No No Yes Yes No Yes Yes Yes Yes Yes No No No Yes Yes No Yes No Yes No Yes No No Yes Yes No No Yes Yes Yes No No Yes No No Yes Yes No Yes No No No Yes No No Yes No Yes No Yes Yes Yes Yes No No No No No Yes No Yes No Yes No Yes Yes No No No No No No No Yes No No Yes Yes No Yes Yes ...
result:
wrong answer 1st words differ - expected: 'No', found: 'Yes'