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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#789502 | #9810. Obliviate, Then Reincarnate | xhytom | WA | 696ms | 87780kb | C++23 | 3.4kb | 2024-11-27 20:35:47 | 2024-11-27 20:35:51 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
void solve() {
int n, m, q;
std::cin >> n >> m >> q;
std::vector<std::pair<int, int>> edges(m);
vector<vector<pair<int,int>>> adj(n);
vector<vector<pair<int,int>>> bac(n);
std::map<std::pair<int, int>, int> is;
std::vector<int> cnt(n + 1);
for (auto &[a, b] : edges) {
cin >> a >> b;
a = (a % n + n) % n;
int u = a, v = u + b;
int w = 0;
w = v / n;
v -= v / n * n;
while (v < 0) {
v += n;
w -= 1;
}
while (v >= n) {
v -= n;
w += 1;
}
// std::cerr << "?" << u << " " << v << " " << w << std::endl;
if (!is.count({u, v})) {
is[{u, v}] = w;
} else if(is[{u, v}] != w) {
is[{u, v}] = 1E18;
}
bac[v].push_back({u, w});
}
for (auto [tmp, w] : is) {
auto [u, v] = tmp;
if (w == 1E18) {
adj[u].push_back({v, 1E18});
} else {
adj[u].push_back({v, w});
}
}
std::vector<int> vis(n, -1E18), cur(n, -1E18);
std::vector<int> ok(n, 0);
for (int i = 0; i < n; i++) {
if (vis[i] == -1E18) {
auto dfs = [&](auto self, int x, int fx, int d, int all) -> void {
vis[x] = 1;
cur[x] = d;
cnt[x] = all;
// std::cerr << "DFS" << x << " " << fx << " " << d << std::endl;
for (auto [y, w] : adj[x]) {
if (vis[y] == -1E18) {
if (w == 1E18) {
self(self, y, x, 1E18, all + 1);
} else {
self(self, y, x, d + w, all);
}
} else {
// std::cerr << "!!!" << x << " " << y << " " << cur[x] << " " << cur[y] << " " << d << " " << w << std::endl;;
if ((cur[y] != -1E18 && (cur[y] != d + w || w == 1E18)) || (cnt[x] - cnt[y])) {
// std::cerr << "TRUE" << std::endl;
ok[y] = true;
}
}
ok[x] |= ok[y];
}
cur[x] = -1E18;
};
dfs(dfs, i, -1, 0, 0);
}
// std::cerr << "####" << std::endl;
// for (int i = 0; i < n; i++) {
// std::cerr << vis[i] << " \n"[i == n - 1];
// }
// for (int i = 0; i < n; i++) {
// std::cerr << ok[i] << " \n"[i == n - 1];
// }
}
std::queue<int> que;
for (int i = 0; i < n; i++) {
if (ok[i]) {
que.push(i);
}
}
while (!que.empty()) {
int x = que.front();
que.pop();
for (auto [y, w] : bac[x]) {
if (!ok[y]) {
ok[y] = true;
que.push(y);
}
}
}
for (int i = 1; i <= q; i++) {
int x;
std::cin >> x;
x = (x % n + n) % n;
std::cout << (ok[x] ? "Yes" : "No") << "\n";
}
}
signed main() {
std::ios::sync_with_stdio(false);
std::cin.tie(0);
int t = 1;
// std::cin >> t;
while (t --) {
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3784kb
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: 3592kb
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: 3628kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3776kb
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: 678ms
memory: 77840kb
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: -100
Wrong Answer
time: 696ms
memory: 87780kb
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:
wrong answer 171st words differ - expected: 'No', found: 'Yes'