oj.uz

Submission #113876

# Submission time Handle Problem Language Result Execution time Memory
113876 2019-05-29T01:28:07 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
90 / 100
 97 ms 4192 KB 
#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

mt19937 mrand(random_device{}());
int rnd(int x) { return mrand() % x; }
struct RNG {
	int operator () (int n) {
		return rnd(n);
	}
};

void scattered(vector<int> u, vector<int> v, int f) {
	if(u.empty()) return;

	if(u.size() == 1) {
		Answer(u.back(), v.back());
		return;
	}
	random_shuffle(u.begin(), u.end(), RNG());
	random_shuffle(v.begin(), v.end(), RNG());
	int mid = ((int)u.size() - 2) >> 1;
	int last;
	if(f) {
		for(int i = mid + 1; i < v.size(); i++) {
			last = Query(v[i]);
		}
	} else {
		for(int i = 0; i <= mid; i++) {
			last = Query(v[i]);
		}
	}
	vector<int> lu, lv(v.begin(), v.begin() + mid + 1), ru, rv(v.begin() + mid + 1, v.end());
	for(int i = 0; i < u.size(); i++) {
		if(lu.size() == lv.size()) {
			ru.emplace_back(u[i]);
		} else if(ru.size() == rv.size()) {
			lu.emplace_back(u[i]);
		} else {
			int rep = Query(u[i]);
			if(rep == last) {
				lu.emplace_back(u[i]);
			} else {
				ru.emplace_back(u[i]);
			}
			last = rep;
		}
	}
	scattered(lu, lv, 1);
	scattered(ru, rv, 0);
}

void together(vector<int> v) {
	random_shuffle(v.begin(), v.end(), RNG());
  
	if(v.empty()) return;
	if(v.size() == 2) return Answer(v[0], v[1]);

	vector<int> l, r;
	int last = -1;
	for(int i = 0; i < v.size(); i++) {
		if(r.size() == v.size() / 2) {
			l.emplace_back(v[i]);
			continue;
		}
		int rep = Query(v[i]);
		if(rep == last) {
			l.emplace_back(v[i]);
		} else {
			r.emplace_back(v[i]);
		} last = rep;
	}
	scattered(l, r, 1);
}

void Solve(int N) {
	vector<int> v(2 * N);
	iota(v.begin(), v.end(), 1);
	together(v);
}

Compilation message

minerals.cpp: In function 'void scattered(std::vector<int>, std::vector<int>, int)':
minerals.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = mid + 1; i < v.size(); i++) {
                        ~~^~~~~~~~~~
minerals.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < u.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void together(std::vector<int>)':
minerals.cpp:61:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < v.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void scattered(std::vector<int>, std::vector<int>, int)':
minerals.cpp:41:4: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(rep == last) {
    ^~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 7 ms 640 KB Output is correct
4 Correct 14 ms 1024 KB Output is correct
5 Correct 27 ms 1536 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct
19 Correct 78 ms 3876 KB Output is correct
20 Correct 83 ms 3772 KB Output is correct
21 Correct 82 ms 3772 KB Output is correct
22 Correct 82 ms 3716 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct
19 Correct 78 ms 3876 KB Output is correct
20 Correct 83 ms 3772 KB Output is correct
21 Correct 82 ms 3772 KB Output is correct
22 Correct 82 ms 3716 KB Output is correct
23 Correct 97 ms 3828 KB Output is correct
24 Correct 90 ms 3936 KB Output is correct
25 Correct 85 ms 3844 KB Output is correct
26 Correct 81 ms 3832 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct
19 Correct 78 ms 3876 KB Output is correct
20 Correct 83 ms 3772 KB Output is correct
21 Correct 82 ms 3772 KB Output is correct
22 Correct 82 ms 3716 KB Output is correct
23 Correct 97 ms 3828 KB Output is correct
24 Correct 90 ms 3936 KB Output is correct
25 Correct 85 ms 3844 KB Output is correct
26 Correct 81 ms 3832 KB Output is correct
27 Correct 91 ms 4056 KB Output is correct
28 Correct 88 ms 3972 KB Output is correct
29 Correct 89 ms 4192 KB Output is correct
30 Correct 81 ms 3796 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct
19 Correct 78 ms 3876 KB Output is correct
20 Correct 83 ms 3772 KB Output is correct
21 Correct 82 ms 3772 KB Output is correct
22 Correct 82 ms 3716 KB Output is correct
23 Correct 97 ms 3828 KB Output is correct
24 Correct 90 ms 3936 KB Output is correct
25 Correct 85 ms 3844 KB Output is correct
26 Correct 81 ms 3832 KB Output is correct
27 Correct 91 ms 4056 KB Output is correct
28 Correct 88 ms 3972 KB Output is correct
29 Correct 89 ms 4192 KB Output is correct
30 Correct 81 ms 3796 KB Output is correct
31 Correct 94 ms 4092 KB Output is correct
32 Correct 90 ms 3980 KB Output is correct
33 Correct 89 ms 4044 KB Output is correct
34 Correct 85 ms 3836 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 27 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1224 KB Output is correct
12 Correct 28 ms 1700 KB Output is correct
13 Correct 27 ms 1568 KB Output is correct
14 Correct 28 ms 1664 KB Output is correct
15 Correct 77 ms 3708 KB Output is correct
16 Correct 78 ms 3748 KB Output is correct
17 Correct 79 ms 3744 KB Output is correct
18 Correct 77 ms 3576 KB Output is correct
19 Correct 78 ms 3876 KB Output is correct
20 Correct 83 ms 3772 KB Output is correct
21 Correct 82 ms 3772 KB Output is correct
22 Correct 82 ms 3716 KB Output is correct
23 Correct 97 ms 3828 KB Output is correct
24 Correct 90 ms 3936 KB Output is correct
25 Correct 85 ms 3844 KB Output is correct
26 Correct 81 ms 3832 KB Output is correct
27 Correct 91 ms 4056 KB Output is correct
28 Correct 88 ms 3972 KB Output is correct
29 Correct 89 ms 4192 KB Output is correct
30 Correct 81 ms 3796 KB Output is correct
31 Correct 94 ms 4092 KB Output is correct
32 Correct 90 ms 3980 KB Output is correct
33 Correct 89 ms 4044 KB Output is correct
34 Correct 85 ms 3836 KB Output is correct
35 Incorrect 87 ms 4076 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -