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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
#786470#9810. Obliviate, Then ReincarnateEmpty_DustWA 187ms22076kbC++233.7kb2024-11-26 21:40:362024-11-26 21:40:37

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 21:40:37]
  • Judged
  • Verdict: WA
  • Time: 187ms
  • Memory: 22076kb
  • [2024-11-26 21:40:36]
  • Submitted

answer

#include <bits/stdc++.h>

#define ranges std::ranges
#define views std::views

using u32 = unsigned;
using i64 = long long;
using u64 = unsigned long long;

using pii = std::pair<int, int>;
using a3 = std::array<int, 3>;
using a4 = std::array<int, 4>;

const int N = 1e6;
const int MAXN = 1e6 + 10;
const int inf = 1e9;
// const int mod = 1e9 + 7;
const int mod = 998244353;

struct SCC {
    int n;
    std::vector<std::vector<int>> adj;
    std::vector<int> stk;
    std::vector<int> dfn, low, bel;
    int cur, cnt;

    std::vector<int> huan;

    SCC() {}
    SCC(int n) {
        init(n);
    }

    void init(int n) {
        this->n = n;
        adj.assign(n, {});
        dfn.assign(n, -1);
        low.resize(n);
        bel.assign(n, -1);
        stk.clear();
        cur = cnt = 0;
    }

    void addEdge(int u, int v) {
        if (u == v) {
            huan.push_back(u);
            return;
        }
        adj[u].push_back(v);
    }

    void dfs(int x) {
        dfn[x] = low[x] = cur++;
        stk.push_back(x);

        for (auto y : adj[x]) {
            if (dfn[y] == -1) {
                dfs(y);
                low[x] = std::min(low[x], low[y]);
            }
            else if (bel[y] == -1) {
                low[x] = std::min(low[x], dfn[y]);
            }
        }

        if (dfn[x] == low[x]) {
            int y;
            do {
                y = stk.back();
                bel[y] = cnt;
                stk.pop_back();
            } while (y != x);
            cnt++;
        }
    }

    std::vector<int> work() {
        for (int i = 0; i < n; i++) {
            if (dfn[i] == -1) {
                dfs(i);
            }
        }
        int m = n / 2;
        std::vector<int> ans(n), vis(n);
        for (int i = 0;i < m;++i) {
            if (bel[i] == bel[i + m]) {
                vis[i] = vis[i + m] = 1;
                ans[i] = ans[i + m] = 1;
                // std::cout << i << ' ';
            }
        }
        for (int x : huan) {
            ans[x] = 1;
            vis[x] = 1;
        }
        auto dfs2 = [&](auto&& self, int u, int p) ->bool {
            if (vis[u])return ans[u];
            vis[u] = 1;
            for (int v : adj[u])if (v != p) {
                if (self(self, v, u)) {
                    ans[u] = 1;
                }
            }
            return ans[u];
            };
        for (int i = 0;i < n;++i) {
            if (!vis[i])
                dfs2(dfs2, i, -1);
        }
        return ans;
    }
};

void solve() {
    int n, m, q;std::cin >> n >> m >> q;
    SCC scc(2 * n);
    int N = 2 * n;
    for (int i = 0; i < m;++i) {
        int a, b;std::cin >> a >> b;
        if (!b)continue;
        a = ((a % n) + n) % n;
        // if (b % n == 0) {
        //     scc.addEdge(a, a);
        //     scc.addEdge(a + n, a + n);
        //     continue;
        // }
        // b += a;
        // if (b > n)
        //     b = b % n + n;
        // if (b < -n)
        //     n = b % n - n;
        b = ((a + b) % n + N) % N;
        scc.addEdge(a, b);
        // std::cout << a << ' ' << b << '\n';
        scc.addEdge(a + n, ((b + n) % N + N) % N);
        // std::cout << a + n << ' ' << ((b + n) % N + N) % N << '\n';
    }
    // std::cout << (-100 % 7) << '\n';
    auto ans = scc.work();
    for (int i = 0;i < q;++i) {
        int x;std::cin >> x;
        x = (x % n + n) % n;
        std::cout << (ans[x] ? "Yes" : "No") << '\n';
    }
}

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0), std::cout.tie(0);
    int t = 1;
    while (t--) {
        solve();
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3788kb

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: 3536kb

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: 3488kb

input:

1 1 1
0 1000000000
-1000000000

output:

Yes

result:

ok "Yes"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3532kb

input:

3 2 3
0 1000000000
1 -1000000000
-1000000000
0
-1000000000

output:

No
No
No

result:

ok 3 tokens

Test #5:

score: -100
Wrong Answer
time: 187ms
memory: 22076kb

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:

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
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
...

result:

wrong answer 1st words differ - expected: 'No', found: 'Yes'