oj.uz

Submission #113872

# Submission time Handle Problem Language Result Execution time Memory
113872 2019-05-29T01:20:17 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
80 / 100
 87 ms 3960 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());
	// random_shuffle(v.begin(), v.end(), RNG());

	if(v.empty()) return;
	if(v.size() == 2) return Answer(v[0], v[1]);
	if(v.size() == 4) {
		int last = Query(v[0]);
		if(Query(v[1]) == last) {
			together({v[0], v[1]});
			together({v[2], v[3]});
			return;
		} else {
			scattered({v[2], v[3]}, {v[0], v[1]}, 1);
		}
		return;
	}
	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]);
			last = Query(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:72:19: 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 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 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 4 ms 384 KB Output is correct
3 Correct 7 ms 640 KB Output is correct
4 Correct 15 ms 896 KB Output is correct
5 Correct 29 ms 1536 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct
19 Correct 80 ms 3772 KB Output is correct
20 Correct 83 ms 3828 KB Output is correct
21 Correct 81 ms 3844 KB Output is correct
22 Correct 82 ms 3828 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct
19 Correct 80 ms 3772 KB Output is correct
20 Correct 83 ms 3828 KB Output is correct
21 Correct 81 ms 3844 KB Output is correct
22 Correct 82 ms 3828 KB Output is correct
23 Correct 85 ms 3840 KB Output is correct
24 Correct 83 ms 3960 KB Output is correct
25 Correct 87 ms 3956 KB Output is correct
26 Correct 85 ms 3724 KB Output is correct

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct
19 Correct 80 ms 3772 KB Output is correct
20 Correct 83 ms 3828 KB Output is correct
21 Correct 81 ms 3844 KB Output is correct
22 Correct 82 ms 3828 KB Output is correct
23 Correct 85 ms 3840 KB Output is correct
24 Correct 83 ms 3960 KB Output is correct
25 Correct 87 ms 3956 KB Output is correct
26 Correct 85 ms 3724 KB Output is correct
27 Incorrect 83 ms 3956 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct
19 Correct 80 ms 3772 KB Output is correct
20 Correct 83 ms 3828 KB Output is correct
21 Correct 81 ms 3844 KB Output is correct
22 Correct 82 ms 3828 KB Output is correct
23 Correct 85 ms 3840 KB Output is correct
24 Correct 83 ms 3960 KB Output is correct
25 Correct 87 ms 3956 KB Output is correct
26 Correct 85 ms 3724 KB Output is correct
27 Incorrect 83 ms 3956 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 7 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 29 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1280 KB Output is correct
12 Correct 28 ms 1664 KB Output is correct
13 Correct 27 ms 1716 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 81 ms 3804 KB Output is correct
16 Correct 79 ms 3696 KB Output is correct
17 Correct 77 ms 3732 KB Output is correct
18 Correct 74 ms 3708 KB Output is correct
19 Correct 80 ms 3772 KB Output is correct
20 Correct 83 ms 3828 KB Output is correct
21 Correct 81 ms 3844 KB Output is correct
22 Correct 82 ms 3828 KB Output is correct
23 Correct 85 ms 3840 KB Output is correct
24 Correct 83 ms 3960 KB Output is correct
25 Correct 87 ms 3956 KB Output is correct
26 Correct 85 ms 3724 KB Output is correct
27 Incorrect 83 ms 3956 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -