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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
#572063#9319. Bull FarmAHU_DuckML 1ms6572kbC++174.3kb2024-09-18 11:36:562024-09-18 11:36:56

Judging History

你现在查看的是最新测评结果

  • [2024-09-18 11:36:56]
  • 评测
  • 测评结果:ML
  • 用时:1ms
  • 内存:6572kb
  • [2024-09-18 11:36:56]
  • 提交

answer

#include<bits/stdc++.h>
#define ri int
#define N 2050
#define LL long long
using namespace std;

int T, n, l, q, p[N][N], cnt[N], bad[N];
char s[N * 2];
bool ans[1000050];

int trans(char a, char b) {
	a -= 48; b -= 48;
	return a * 50 + b;
}

struct query {
	int a, b, id;
};
vector<query> Q[N];


struct Graph {
	int dfn[N], low[N];
	int bel[N], ins[N], ru[N], clock;
	vector<int> to1[N], to2[N], vec;
	bitset<N> f[N];
	stack<int> s;

	void first_init() {
		for (ri i = 1; i <= n; i++) {
			to2[i].clear();
			ins[i] = ru[i] = dfn[i] = low[i] = 0;
		}
		vec.clear();
		for (ri i = 1; i <= n; i++) vec.push_back(i);
		for (ri i = 1; i <= n; i++) bel[i] = i;
	}

	void add_edge(int a, int b) {
		if (bel[a] != bel[b]) to2[bel[a]].push_back(bel[b]);
	}

	void tarjan(int x) {
		low[x] = dfn[x] = ++clock;
		s.push(x);
		ins[x] = 1;
		int i, l = to1[x].size(), t;
		for (i = 0; i < l; i++) {
			if (ins[to1[x][i]]) low[x] = min(low[x], dfn[to1[x][i]]);
			else {
				if (dfn[to1[x][i]] == 0) {
					tarjan(to1[x][i]);
					low[x] = min(low[x], low[to1[x][i]]);
				}
			}
		}
		if (dfn[x] == low[x]) {
			do {
				t = s.top();
				bel[t] = x;
				ins[t] = false;
				s.pop();
				if (t == x) break;
			} while (1);
		}
		return;
	}

	void dp(int x) {
		for (auto it = to2[x].begin(); it != to2[x].end(); it++) {
			int y = *it;
			dp(y);
			f[x] |= f[y];
		}
	}

	void init() {
		/*
		for (ri i = 1; i <= n; i++) {
			dfn[i] = low[i] = ins[i] = 0;
			sort(to1[i].begin(), to1[i].end());
			to1[i].resize(unique(to1[i].begin(), to1[i].end()) - to1[i].begin());
		}*/
		for (auto it = vec.begin(); it != vec.end(); it++) {
			ins[*it] = dfn[*it] = low[*it] = 0;
			sort(to2[*it].begin(), to2[*it].end());
			to2[*it].resize(unique(to2[*it].begin(), to2[*it].end()) - to2[*it].begin());
			to1[*it] = to2[*it];
			to2[*it].resize(0);
		}
		clock = 0; while (!s.empty()) s.pop();
		for (auto it = vec.begin(); it != vec.end(); it++) if (!dfn[*it]) tarjan(*it);
		vector<int> vec2; vec2.clear();
		for (auto it = vec.begin(); it != vec.end(); it++) if (*it == bel[*it]) vec2.push_back(*it);
		swap(vec, vec2);
		for (auto it = vec.begin(); it != vec.end(); it++) f[*it] = 0, ru[*it] = 0;
		for (auto it = vec2.begin(); it != vec2.end(); it++) f[bel[*it]][*it] = 1;
		for (auto it = vec2.begin(); it != vec2.end(); it++) {
			for (auto it2 = to1[*it].begin(); it2 != to1[*it].end(); ++it2) if (bel[*it] != bel[*it2]) {
				to2[bel[*it]].push_back(bel[*it2]);
				ru[bel[*it2]]++;
			}
		}
		for (auto it = vec.begin(); it != vec.end(); it++) {
			sort(to2[*it].begin(), to2[*it].end());
			to2[*it].resize(unique(to2[*it].begin(), to2[*it].end()) - to2[*it].begin());
		}
		for (auto it = vec.begin(); it != vec.end(); it++) if (!ru[*it]) dp(*it);
	}
} G;

int main() {
	scanf("%d", &T);
	while (T--) {
		scanf("%d%d%d", &n, &l, &q);
		for (ri i = 1; i <= l; i++) bad[i] = 0;
		for (ri i = 1; i <= q; i++) ans[i] = 0;
		for (ri i = 1; i <= n; i++) cnt[i] = 0;
		for (ri i = 1; i <= l; i++) {
			scanf("%s", s + 1);
			for (ri j = 1, cc = 0; j <= 2 * n; j += 2) {
				p[i][++cc] = trans(s[j], s[j + 1]);
			}
			for (ri j = 1; j <= n; j++) cnt[j] = 0;
			for (ri j = 1; j <= n; j++) cnt[p[i][j]]++;
			int cc = 0;
			for (ri j = 1; j <= n; j++) {
				if (cnt[j] > 2) bad[i] = 1;
				else if (cnt[j] == 2) cc++;
			}
			if (cc >= 2) bad[i] = 1;
			else if (cc == 1) {
				int x = -1, y = -1;
				for (ri j = 1; j <= n; j++) if (cnt[p[i][j]] == 2) {
					if (x == -1) x = j; else y = j;
				}
				else {
					p[i][j] = -1;
				}
				int wu;
				for (ri j = 1; j <= n; j++) if (cnt[j] == 0) wu = j;
				p[i][x] = wu; p[i][y] = wu;
			}
		}
		for (ri i = 0; i <= l; i++) Q[i].clear();
		for (ri i = 1; i <= q; i++) {
			scanf("%s", s + 1);
			int qa = trans(s[1], s[2]);
			int qb = trans(s[3], s[4]);
			int qc = trans(s[5], s[6]);
			Q[qc].push_back((query){qa, qb, i});
		}
		G.first_init();
		for (ri i = 0; i <= l; i++) {
			if (i && !bad[i]) {
				for (ri t = 1; t <= n; t++) if (t != p[i][t] && p[i][t] != -1) G.add_edge(t, p[i][t]);
			}
			G.init();
			for (auto it = Q[i].begin(); it != Q[i].end(); ++it) {
				ans[it->id] = G.f[G.bel[it->a]][G.bel[it->b]];
			}
		}
		for (ri i = 1; i <= q; i++) printf("%d", ans[i]);
		puts("");
	}
	return 0;
} 

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 6572kb

input:

2
5 2 4
0305040201
0404040404
030300
020500
050102
020501
6 2 4
030603010601
010203060504
030202
060402
050602
060401

output:

1011
0100

result:

ok 2 lines

Test #2:

score: 0
Accepted
time: 1ms
memory: 6324kb

input:

1
3 3 6
020202
030301
030201
020102
030203
010201
010303
020303
010202

output:

010101

result:

ok single line: '010101'

Test #3:

score: -100
Memory Limit Exceeded

input:

200
10 10 5000
01060:04020305080709
0103070:060204050908
09070503080401060:02
050308010204090:0607
03010502040607080:09
03080109020504060:07
06050:09040302080107
07080305010409060:02
030809010:0204060507
0:060908070201050304
060700
090:03
09080:
070405
010703
0:0100
080601
030600
070206
0:0:09
08040...

output:

011110000101101110011101111111100101001111110110011110010010001011010101111110011111101001111011101110001011110111010011101001101110101010111010011110110001110001100111111011011011011111111011101001010111100111111101011111011100100001001011010100111110111111110011111100101011001110011110011100101110...

result: