oj.uz

Submission #276002

# Submission time Handle Problem Language Result Execution time Memory
276002 2020-08-20T09:14:00 Z tjd229 Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 73 ms 512 KB 
#include "chameleon.h"
#include <vector>
using namespace std;
namespace {

	vector<int> edge[1001];
	int vis[1001];
	int clr[1001];
	int p[1001];
}  // namespace
void dfs(int x, int c,int stamp) {
	if (vis[x] == stamp) return;
	vis[x] = stamp;
	clr[x] = c;
	for (auto nxt : edge[x]) dfs(nxt, 3 - c, stamp);
}
int qry(vector<int> p,int self) {
	if (p.empty()) return 1;
	p.push_back(self);
	return Query(p);
}

void Solve(int N) {
	int NN = N + N;
	vector<int> clr_set[3];
	for (int i = 2; i <= NN; ++i) {
		clr_set[2].clear(); clr_set[1].clear();
		for (int j = 1; j < i; ++j) {
			dfs(j, 1, i);
			clr_set[clr[j]].push_back(j);
		}
		for (int j = 1; j <= 2; ++j) {
			vector<int> &st = clr_set[j];
			if (st.empty()) continue;
			while (st.size() >= qry(st, i)) {
				int l = 0, r = st.size() - 1;
				int pick = 0;
				while (l < r) {
					int m = (l + r) >> 1;
					//
					vector<int> v(st.begin()+l, st.begin()+ m + 1);
					if (qry(v, i) <= v.size()) {
						//r = m - 1;
						r = m;
						//pick = m;
					}
					else 
						l = m + 1;
					
				}
				pick = l;
				edge[st[pick]].push_back(i); edge[i].push_back(st[pick]);
				st.assign(st.begin() + pick + 1, st.end());
			}
		}
	}
	for (int i = 1; i <= NN; ++i) {
		for (auto x : edge[i]) p[i] += x;
	}
	for (int i = 1; i <= NN; ++i) {
		if (edge[i].size() == 1) continue;
		int to = -1;
		for (int j = 0; j < edge[i].size() && to<0; ++j) { //pick
			vector<int> v;
			for (auto x : edge[i]) {
				if (edge[i][j] == x) continue;
				v.push_back(x);
			}
			if (qry(v, i) == 1) to = edge[i][j];
		}
		p[i] -= to;
		p[to] -= i;
	}
	for (int i = 1; i <= NN; ++i) if (i < p[i]) Answer(i, p[i]);
}

Compilation message

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:36:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |    while (st.size() >= qry(st, i)) {
      |           ~~~~~~~~~~^~~~~~~~~~~~~
chameleon.cpp:43:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |      if (qry(v, i) <= v.size()) {
      |          ~~~~~~~~~~^~~~~~~~~~~
chameleon.cpp:64:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   for (int j = 0; j < edge[i].size() && to<0; ++j) { //pick
      |                   ~~^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 32 ms 384 KB Output is correct
5 Correct 28 ms 384 KB Output is correct
6 Correct 28 ms 384 KB Output is correct
7 Correct 33 ms 384 KB Output is correct
8 Correct 32 ms 384 KB Output is correct
9 Correct 28 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 360 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 360 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 53 ms 464 KB Output is correct
4 Correct 55 ms 512 KB Output is correct
5 Correct 51 ms 384 KB Output is correct
6 Correct 60 ms 384 KB Output is correct
7 Correct 61 ms 384 KB Output is correct
8 Correct 64 ms 384 KB Output is correct
9 Correct 52 ms 384 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 32 ms 384 KB Output is correct
5 Correct 28 ms 384 KB Output is correct
6 Correct 28 ms 384 KB Output is correct
7 Correct 33 ms 384 KB Output is correct
8 Correct 32 ms 384 KB Output is correct
9 Correct 28 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 360 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 53 ms 464 KB Output is correct
31 Correct 55 ms 512 KB Output is correct
32 Correct 51 ms 384 KB Output is correct
33 Correct 60 ms 384 KB Output is correct
34 Correct 61 ms 384 KB Output is correct
35 Correct 64 ms 384 KB Output is correct
36 Correct 52 ms 384 KB Output is correct
37 Correct 61 ms 384 KB Output is correct
38 Correct 32 ms 384 KB Output is correct
39 Correct 67 ms 384 KB Output is correct
40 Correct 60 ms 504 KB Output is correct
41 Correct 61 ms 468 KB Output is correct
42 Correct 28 ms 420 KB Output is correct
43 Correct 53 ms 384 KB Output is correct
44 Correct 63 ms 384 KB Output is correct
45 Correct 73 ms 384 KB Output is correct