oj.uz

Submission #487300

# Submission time Handle Problem Language Result Execution time Memory
487300 2021-11-15T05:31:52 Z Rainbowbunny Minerals (JOI19_minerals) C++17
100 / 100
 49 ms 3272 KB 
#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 45005;

bool In[2 * MAXN];
int lst = 0;
bool query(int i) {
    In[i] ^= 1;
    int cur = Query(i);
    bool ans = cur != lst;
    return lst = cur, ans;
}

int idx[2 * MAXN];
vector<int> A, B;
vector<pair<int, int>> pairs;

constexpr double rat = 1 / 2.56; //ternary
void dfs(int l, int r, const vector<int>& b, bool is_on) {
    if(l == r) {
        assert(b.size() == 1);
        pairs.emplace_back(idx[A[l]], idx[b[0]]);
        return;
    }
    int m = l + (r - l) * rat;
    for(int i = l; i <= m; i++) query(idx[A[i]]);
    vector<int> lf, rg;
    for(int id: b) {
        if(lf.size() == m - l + 1) rg.push_back(id);
        else if(rg.size() == r - m) lf.push_back(id);
        else (query(idx[id]) == is_on ? lf : rg).push_back(id);
    }
    dfs(l, m, lf, is_on ^ 1);
    if(m < r) dfs(m + 1, r, rg, is_on);
} 

void Solve(int n) {
    mt19937 rng(233);
    iota(idx + 1, idx + (2 * n) + 1, 1);
    shuffle(idx + 1, idx + (2 * n) + 1, rng);
    for(int i = 1; i <= 2 * n; i++) (query(idx[i]) ? A : B).push_back(i);
    dfs(0, n - 1, B, 1);
    assert(pairs.size() == n);
    for(auto& x: pairs) Answer(x.first, x.second);
}

Compilation message

minerals.cpp: In function 'void dfs(int, int, const std::vector<int>&, bool)':
minerals.cpp:31:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |         if(lf.size() == m - l + 1) rg.push_back(id);
      |            ~~~~~~~~~~^~~~~~~~~~~~
minerals.cpp:32:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 |         else if(rg.size() == r - m) lf.push_back(id);
      |                 ~~~~~~~~~~^~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from minerals.cpp:2:
minerals.cpp: In function 'void Solve(int)':
minerals.cpp:45:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |     assert(pairs.size() == n);
      |            ~~~~~~~~~~~~~^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 328 KB Output is correct
2 Correct 2 ms 456 KB Output is correct
3 Correct 4 ms 584 KB Output is correct
4 Correct 6 ms 840 KB Output is correct
5 Correct 13 ms 1352 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct
19 Correct 39 ms 3020 KB Output is correct
20 Correct 41 ms 3028 KB Output is correct
21 Correct 38 ms 3040 KB Output is correct
22 Correct 39 ms 2876 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct
19 Correct 39 ms 3020 KB Output is correct
20 Correct 41 ms 3028 KB Output is correct
21 Correct 38 ms 3040 KB Output is correct
22 Correct 39 ms 2876 KB Output is correct
23 Correct 41 ms 3156 KB Output is correct
24 Correct 42 ms 3156 KB Output is correct
25 Correct 40 ms 3124 KB Output is correct
26 Correct 41 ms 2912 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct
19 Correct 39 ms 3020 KB Output is correct
20 Correct 41 ms 3028 KB Output is correct
21 Correct 38 ms 3040 KB Output is correct
22 Correct 39 ms 2876 KB Output is correct
23 Correct 41 ms 3156 KB Output is correct
24 Correct 42 ms 3156 KB Output is correct
25 Correct 40 ms 3124 KB Output is correct
26 Correct 41 ms 2912 KB Output is correct
27 Correct 43 ms 3132 KB Output is correct
28 Correct 43 ms 3140 KB Output is correct
29 Correct 43 ms 3216 KB Output is correct
30 Correct 41 ms 3012 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct
19 Correct 39 ms 3020 KB Output is correct
20 Correct 41 ms 3028 KB Output is correct
21 Correct 38 ms 3040 KB Output is correct
22 Correct 39 ms 2876 KB Output is correct
23 Correct 41 ms 3156 KB Output is correct
24 Correct 42 ms 3156 KB Output is correct
25 Correct 40 ms 3124 KB Output is correct
26 Correct 41 ms 2912 KB Output is correct
27 Correct 43 ms 3132 KB Output is correct
28 Correct 43 ms 3140 KB Output is correct
29 Correct 43 ms 3216 KB Output is correct
30 Correct 41 ms 3012 KB Output is correct
31 Correct 44 ms 3168 KB Output is correct
32 Correct 43 ms 3244 KB Output is correct
33 Correct 41 ms 3156 KB Output is correct
34 Correct 43 ms 3044 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 200 KB Output is correct
2 Correct 0 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 2 ms 328 KB Output is correct
6 Correct 2 ms 456 KB Output is correct
7 Correct 4 ms 584 KB Output is correct
8 Correct 6 ms 840 KB Output is correct
9 Correct 13 ms 1352 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 9 ms 1096 KB Output is correct
12 Correct 13 ms 1400 KB Output is correct
13 Correct 13 ms 1352 KB Output is correct
14 Correct 16 ms 1364 KB Output is correct
15 Correct 43 ms 3008 KB Output is correct
16 Correct 46 ms 2964 KB Output is correct
17 Correct 36 ms 2976 KB Output is correct
18 Correct 39 ms 2840 KB Output is correct
19 Correct 39 ms 3020 KB Output is correct
20 Correct 41 ms 3028 KB Output is correct
21 Correct 38 ms 3040 KB Output is correct
22 Correct 39 ms 2876 KB Output is correct
23 Correct 41 ms 3156 KB Output is correct
24 Correct 42 ms 3156 KB Output is correct
25 Correct 40 ms 3124 KB Output is correct
26 Correct 41 ms 2912 KB Output is correct
27 Correct 43 ms 3132 KB Output is correct
28 Correct 43 ms 3140 KB Output is correct
29 Correct 43 ms 3216 KB Output is correct
30 Correct 41 ms 3012 KB Output is correct
31 Correct 44 ms 3168 KB Output is correct
32 Correct 43 ms 3244 KB Output is correct
33 Correct 41 ms 3156 KB Output is correct
34 Correct 43 ms 3044 KB Output is correct
35 Correct 49 ms 3240 KB Output is correct
36 Correct 46 ms 3240 KB Output is correct
37 Correct 48 ms 3272 KB Output is correct
38 Correct 45 ms 3056 KB Output is correct