oj.uz

Submission #211905

# Submission time Handle Problem Language Result Execution time Memory
211905 2020-03-21T16:24:57 Z mieszko11b Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 73 ms 512 KB 
#include "chameleon.h"
#include <vector>
#include <bits/stdc++.h>

using namespace std;

namespace {
	int cnt = 0;
	vector<int> A[4];
	vector<int> E[1007];
	int nxt[1007], prv[1007];
}  // namespace

bool check(int i, int a, int b, int w) {
	vector<int> V(b - a + 1);
	for(int j = a ; j <= b ; j++)
		V[j - a] = A[i][j];
	V.push_back(w);
	return Query(V) != V.size();
}

void Solve(int n) {
	n *= 2;
	
	for(int i = 1 ; i <= n ; i++) {
		int firstok = -1;
		for(int j = 0 ; j < cnt ; j++) {
			int ind = 0;
			bool ok = true;
			while(ind < A[j].size() && check(j, ind, A[j].size() - 1, i)) {
				ok = false;
				int pocz = ind, kon = A[j].size() - 1, mid;
				while(pocz < kon) {
					mid = (pocz + kon) / 2;
					if(check(j, ind, mid, i))
						kon = mid;
					else
						pocz = mid + 1;
				}
				E[i].push_back(A[j][pocz]);
				E[A[j][pocz]].push_back(i);
				//~ cout << "E " << i << " " << A[j][pocz] << endl;
				ind = pocz + 1;
			}
			if(ok && firstok == -1)
				firstok = j;
		}
		
		if(firstok == -1) {
			firstok = cnt++;
		}
		
		A[firstok].push_back(i);
	}
	
	//~ for(int i = 1 ; i <= n ; i++) {
		//~ cout << i << ": ";
		//~ for(int j : E[i])
			//~ cout << j << " ";
		//~ cout << endl;
	//~ }
	
	for(int i = 1 ; i <= n ; i++) {
		if(E[i].size() == 3) {
			if(Query({i, E[i][0], E[i][1]}) == 1) {
				nxt[i] = E[i][2];
				//~ prv[E[i][2]] = i;
			} else if(Query({i, E[i][0], E[i][2]}) == 1) {
				nxt[i] = E[i][1];
				//~ prv[E[i][1]] = i;
			} else {
				nxt[i] = E[i][0];
				//~ prv[E[i][0]] = i;
			}
		}
	}
	
	for(int i = 1 ; i <= n ; i++) {
		int ans;
		for(int x : E[i])
			if(x != nxt[i] && nxt[x] != i)
				ans = x;
		if(ans > i)
			Answer(i, ans);
	}
}

Compilation message

chameleon.cpp: In function 'bool check(int, int, int, int)':
chameleon.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  return Query(V) != V.size();
         ~~~~~~~~~^~~~~~~~~~~
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:30:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(ind < A[j].size() && check(j, ind, A[j].size() - 1, i)) {
          ~~~~^~~~~~~~~~~~~
chameleon.cpp: At global scope:
chameleon.cpp:11:17: warning: '{anonymous}::prv' defined but not used [-Wunused-variable]
  int nxt[1007], prv[1007];
                 ^~~
chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:84:10: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
    Answer(i, ans);
    ~~~~~~^~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 36 ms 384 KB Output is correct
5 Correct 32 ms 460 KB Output is correct
6 Correct 35 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 32 ms 420 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 304 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 304 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 6 ms 384 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 6 ms 384 KB Output is correct
16 Correct 6 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 50 ms 440 KB Output is correct
4 Correct 59 ms 480 KB Output is correct
5 Correct 56 ms 384 KB Output is correct
6 Correct 52 ms 448 KB Output is correct
7 Correct 60 ms 428 KB Output is correct
8 Correct 62 ms 452 KB Output is correct
9 Correct 69 ms 384 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 32 ms 384 KB Output is correct
4 Correct 36 ms 384 KB Output is correct
5 Correct 32 ms 460 KB Output is correct
6 Correct 35 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 32 ms 420 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 304 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 6 ms 384 KB Output is correct
22 Correct 6 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 6 ms 384 KB Output is correct
25 Correct 6 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 50 ms 440 KB Output is correct
31 Correct 59 ms 480 KB Output is correct
32 Correct 56 ms 384 KB Output is correct
33 Correct 52 ms 448 KB Output is correct
34 Correct 60 ms 428 KB Output is correct
35 Correct 62 ms 452 KB Output is correct
36 Correct 69 ms 384 KB Output is correct
37 Correct 51 ms 432 KB Output is correct
38 Correct 40 ms 416 KB Output is correct
39 Correct 69 ms 384 KB Output is correct
40 Correct 69 ms 456 KB Output is correct
41 Correct 73 ms 420 KB Output is correct
42 Correct 31 ms 384 KB Output is correct
43 Correct 52 ms 384 KB Output is correct
44 Correct 50 ms 384 KB Output is correct
45 Correct 67 ms 512 KB Output is correct