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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 |
---|---|---|---|---|---|---|---|---|---|
#785362 | #9810. Obliviate, Then Reincarnate | happy_lazier# | WA | 3ms | 5888kb | C++20 | 2.1kb | 2024-11-26 17:39:36 | 2024-11-26 17:39:37 |
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)
- [2024-11-26 17:39:36]
- Submitted
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define rep(i,l,r) for(ll i=l;i<=r;++i)
#define rep_(i,r,l) for(ll i=r;i>=l;--i)
typedef pair<ll, ll> pll;
const ll N = 1e6 + 7;
const ll P = 1e9 + 7;
const ll Inf = 1e18;
ll n, m, dfn[N], low[N], cnt, col[N], stac[N], top;
vector<ll> g[N], rev[N];
bool slf[N], vis[N];
void tarjan(int cur) {
low[cur] = dfn[cur] = ++cnt;
stac[++top] = cur; vis[cur] = true;
for(auto v : g[cur]) {
if (!dfn[v]) {
tarjan(v);
low[cur] = min(low[cur], low[v]);
}
else if (vis[v]) {
low[cur] = min(low[cur], low[v]);
}
}
if (dfn[cur] == low[cur]) {
int node;
while (node = stac[top--]) {
col[node] = cur;
vis[node] = false;
if (cur == node) break;
}
}
}
void solve() {
ll q;
cin >> n >> m >> q;
rep(i, 1, m) {
ll a, b; cin >> a >> b;
if (b == 0) continue;
ll u = (a % n + n) % n;
ll v = ((a + b) % n + n) % n;
//cout << u << " ---> " << v << endl;
if (u == v) slf[u] = true;
else {
g[u].push_back(v);
rev[v].push_back(u);
}
}
rep(i, 0, n - 1) {
if (!dfn[i]) tarjan(i);
}
map<ll, ll> siz;
rep(i, 0, n - 1) siz[col[i]]++;
/*map<ll, vector<ll>> debg;
rep(i, 0, n - 1) debg[i].push_back(i);
for (auto& [cc, vec] : debg) {
cout << "col " << cc << " : ";
for (auto v : vec) cout << v << " , ";
cout << endl;
}*/
vector<bool> mark(n + 1, false);
queue<ll> que;
rep(i, 0, n - 1) {
if (slf[i] && !mark[i]) {
mark[i] = true;
for (auto v : rev[i]) {
mark[v] = true;
que.push(v);
}
while (!que.empty()) {
ll cur = que.front(); que.pop();
slf[cur] = true;
for (auto v : g[cur]) {
if (!mark[v]) {
mark[v] = true;
que.push(v);
}
}
}
}
}
while (q--) {
ll x; cin >> x;
x = (x % n + n) % n;
if (slf[x] || siz[col[x]] > 1) cout << "Yes" << endl;
else cout << "No" << endl;
}
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int T(1);
while (T--) {
solve();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 2ms
memory: 5888kb
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: 3ms
memory: 5856kb
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: 2ms
memory: 3552kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: -100
Wrong Answer
time: 2ms
memory: 5556kb
input:
3 2 3 0 1000000000 1 -1000000000 -1000000000 0 -1000000000
output:
No Yes No
result:
wrong answer 2nd words differ - expected: 'No', found: 'Yes'