oj.uz

Submission #212906

# Submission time Handle Problem Language Result Execution time Memory
212906 2020-03-24T13:37:54 Z keko37 Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 59 ms 512 KB 
#include "chameleon.h"
#include<bits/stdc++.h>

using namespace std;

const int MAXN = 1005;

int n;
int bio[MAXN], love[MAXN];
vector <int> v[MAXN], comp[2];

//int Query (vector <int> & p) {}
//void Answer (int a, int b) {}

void dfs (int x, bool col) {
    if (bio[x] != -1) return;
    bio[x] = col;
    comp[col].push_back(x);
    for (auto sus : v[x]) {
        dfs(sus, !col);
    }
}

void split (int m) {
    comp[0].clear(); comp[1].clear();
    memset(bio, -1, sizeof bio);
    for (int i = 1; i <= m; i++) {
        if (bio[i] == -1) dfs(i, 0);
    }
}

bool ask (int curr, int lo, int hi, vector <int> & c) {
    vector <int> q(hi - lo + 1);
    for (int i = lo; i <= hi; i++) {
        q[i - lo] = c[i];
    }
    q.push_back(curr);
    return Query(q) < q.size();
}

int gen_edge (int curr, vector <int> & c, int lo) {
    int hi = (int)c.size() - 1;
    if (!ask(curr, lo, hi, c)) return c.size();
    while (lo < hi) {
        int mid = (lo + hi) / 2;
        if (ask(curr, lo, mid, c)) {
            hi = mid;
        } else {
            lo = mid + 1;
        }
    }
    return lo;
}

void build () {
    for (int i = 1; i <= 2 * n; i++) {
        split(i - 1);
        for (int j = 0; j < 2; j++) {
            if (comp[j].empty()) continue;
            int lo = 0;
            while (lo < comp[j].size()) {
                int res = gen_edge(i, comp[j], lo);
                if (res < comp[j].size()) {
                    int sus = comp[j][res];
                    v[sus].push_back(i);
                    v[i].push_back(sus);
                }
                lo = res + 1;
            }
        }
    }
}

void Solve (int N) {
	n = N;
    build();
    for (int i = 1; i <= 2 * n; i++) {
        if (v[i].size() == 3) {
            int a = v[i][0], b = v[i][1], c = v[i][2];
            vector <int> q;
            q = {i, a, b}; if (Query(q) == 1) love[i] = c;
            q = {i, a, c}; if (Query(q) == 1) love[i] = b;
            q = {i, b, c}; if (Query(q) == 1) love[i] = a;
        }
    }
    for (int i = 1; i <= 2 * n; i++) {
        for (auto sus : v[i]) {
            if (love[i] != sus && love[sus] != i && i < sus) Answer(i, sus);
        }
    }
}

/*int main () {
    return 0;
}*/

Compilation message

chameleon.cpp: In function 'bool ask(int, int, int, std::vector<int>&)':
chameleon.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     return Query(q) < q.size();
            ~~~~~~~~~^~~~~~~~~~
chameleon.cpp: In function 'void build()':
chameleon.cpp:61:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while (lo < comp[j].size()) {
                    ~~~^~~~~~~~~~~~~~~~
chameleon.cpp:63:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 if (res < comp[j].size()) {
                     ~~~~^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 27 ms 384 KB Output is correct
4 Correct 26 ms 384 KB Output is correct
5 Correct 26 ms 384 KB Output is correct
6 Correct 26 ms 384 KB Output is correct
7 Correct 26 ms 384 KB Output is correct
8 Correct 26 ms 384 KB Output is correct
9 Correct 26 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 436 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 436 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 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 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 6 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

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 50 ms 504 KB Output is correct
4 Correct 58 ms 440 KB Output is correct
5 Correct 51 ms 504 KB Output is correct
6 Correct 52 ms 384 KB Output is correct
7 Correct 52 ms 512 KB Output is correct
8 Correct 50 ms 504 KB Output is correct
9 Correct 59 ms 504 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 27 ms 384 KB Output is correct
4 Correct 26 ms 384 KB Output is correct
5 Correct 26 ms 384 KB Output is correct
6 Correct 26 ms 384 KB Output is correct
7 Correct 26 ms 384 KB Output is correct
8 Correct 26 ms 384 KB Output is correct
9 Correct 26 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 512 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 436 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 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 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 6 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 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 4 ms 384 KB Output is correct
29 Correct 4 ms 384 KB Output is correct
30 Correct 50 ms 504 KB Output is correct
31 Correct 58 ms 440 KB Output is correct
32 Correct 51 ms 504 KB Output is correct
33 Correct 52 ms 384 KB Output is correct
34 Correct 52 ms 512 KB Output is correct
35 Correct 50 ms 504 KB Output is correct
36 Correct 59 ms 504 KB Output is correct
37 Correct 52 ms 488 KB Output is correct
38 Correct 26 ms 384 KB Output is correct
39 Correct 52 ms 384 KB Output is correct
40 Correct 59 ms 512 KB Output is correct
41 Correct 55 ms 512 KB Output is correct
42 Correct 27 ms 384 KB Output is correct
43 Correct 50 ms 504 KB Output is correct
44 Correct 51 ms 504 KB Output is correct
45 Correct 52 ms 384 KB Output is correct