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
#798647#9810. Obliviate, Then Reincarnateucup-team4975WA 181ms18296kbC++232.7kb2024-12-04 15:41:142024-12-04 15:41:14

Judging History

This is the latest submission verdict.

  • [2024-12-04 15:41:14]
  • Judged
  • Verdict: WA
  • Time: 181ms
  • Memory: 18296kb
  • [2024-12-04 15:41:14]
  • Submitted

answer

#define LOCAL
#include <bits/stdc++.h>
#define fir first
#define sec second
#define el '\n'

#ifdef LOCAL
#define FINISH cerr << "FINISH" << endl;
#else
#define FINISH ;
#endif

#ifdef LOCAL
#define debug(x) cerr << setw(4) << #x << " == " << x << endl
#else
#define debug(x)
#endif

#ifdef LOCAL
#define debugv(x)                   \
    cerr << setw(4) << #x << ":: "; \
    for (auto i : x)                \
        cerr << i << " ";           \
    cerr << endl
#else
#define debugv(x)
#endif

using namespace std;
typedef long long ll;
typedef pair<int, int> PII;
ostream& operator<<(ostream& out, PII& x)
{
    out << x.fir << " " << x.sec << endl;
    return out;
}
#define int long long
const int mod = 998244353;
const int inf = 0x3f3f3f3f;
const int N = 200020;
int id(int x, int n) {
	return (x % n + n) % n + 1;
}
void solve()
{
    int n, m, q;
    cin >> n >> m >> q;
    vector<vector<PII>> edge(n + 1);
    for (int i = 1; i <= m; i++) {
    	int x, y;
    	cin >> x >> y;
    	edge[id(x, n)].push_back(PII(id(y + x, n), y));
        // cout << id(x, n) << " " << id(y + x, n) << " " << y << endl;
    }

    vector<int> dfn(n + 1, 0), low(n + 1, 0), col(n + 1, 0), val(n + 1, 0), stk;

    int cnt = 0, tot = 0;
    auto dfs = [&] (auto &self, int x) -> void {
    	dfn[x] = low[x] = ++tot;
    	stk.push_back(x);
    	for (auto [to, w] : edge[x]) {
    		val[to] = val[x] + w;
    		if (!dfn[to]) {
    			self(self, to);
    			low[x] = min(low[x], low[to]);
    		}
    		else if (!col[to]) {
    			low[x] = min(low[x], dfn[to]);
    		}
    	}
    	if (dfn[x] == low[x]) {
    		int y;
    		cnt++;
    		do {
    			y = stk.back();
    			col[y] = cnt;
    			stk.pop_back();
    		} while (y != x);
    	}
    };

    for (int i = 1; i <= n; i++) {
    	if (!dfn[i]) {
    		dfs(dfs, i);
    	}
    }

    vector<int> ans(n + 1, 0);
    vector<vector<int>> g(n + 1);
    for (int i = 1; i <= n; i++) {
    	for (auto [to, w] : edge[i]) {
    		if (col[i] != col[to]) {
    			g[col[to]].push_back(col[i]);
    		}
    		if (col[i] == col[to] && val[i] + w != val[to]) {
    			ans[col[i]] = 1;
    		}
    	}
    }

    for (int i = 1; i <= cnt; i++) {
    	if (ans[i])
	    	for (auto to : g[i]) {
	    		ans[to] = 1;
	    	}
    }

    for (int i = 1; i <= q; i++) {
    	int x;
    	cin >> x;
    	x = id(x, n);
    	if (ans[col[x]] == 1)
    		cout <<"Yes" <<el;
    	else 
    		cout << "No" << el;
    }
}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int T = 1;
    // cin >> T;
    while (T--) {
        solve();
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3616kb

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: 3880kb

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: 3592kb

input:

1 1 1
0 1000000000
-1000000000

output:

Yes

result:

ok "Yes"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3648kb

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: 181ms
memory: 18296kb

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'