oj.uz

Submission #113874

# Submission time Handle Problem Language Result Execution time Memory
113874 2019-05-29T01:26:03 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
90 / 100
 93 ms 4340 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]);
	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 324 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 8 ms 640 KB Output is correct
4 Correct 14 ms 992 KB Output is correct
5 Correct 27 ms 1664 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 KB Output is correct
19 Correct 79 ms 3772 KB Output is correct
20 Correct 82 ms 3800 KB Output is correct
21 Correct 77 ms 3824 KB Output is correct
22 Correct 78 ms 3596 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 KB Output is correct
19 Correct 79 ms 3772 KB Output is correct
20 Correct 82 ms 3800 KB Output is correct
21 Correct 77 ms 3824 KB Output is correct
22 Correct 78 ms 3596 KB Output is correct
23 Correct 84 ms 3840 KB Output is correct
24 Correct 88 ms 3900 KB Output is correct
25 Correct 80 ms 3964 KB Output is correct
26 Correct 79 ms 3872 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 KB Output is correct
19 Correct 79 ms 3772 KB Output is correct
20 Correct 82 ms 3800 KB Output is correct
21 Correct 77 ms 3824 KB Output is correct
22 Correct 78 ms 3596 KB Output is correct
23 Correct 84 ms 3840 KB Output is correct
24 Correct 88 ms 3900 KB Output is correct
25 Correct 80 ms 3964 KB Output is correct
26 Correct 79 ms 3872 KB Output is correct
27 Correct 84 ms 3864 KB Output is correct
28 Correct 87 ms 3980 KB Output is correct
29 Correct 86 ms 4072 KB Output is correct
30 Correct 86 ms 3864 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 KB Output is correct
19 Correct 79 ms 3772 KB Output is correct
20 Correct 82 ms 3800 KB Output is correct
21 Correct 77 ms 3824 KB Output is correct
22 Correct 78 ms 3596 KB Output is correct
23 Correct 84 ms 3840 KB Output is correct
24 Correct 88 ms 3900 KB Output is correct
25 Correct 80 ms 3964 KB Output is correct
26 Correct 79 ms 3872 KB Output is correct
27 Correct 84 ms 3864 KB Output is correct
28 Correct 87 ms 3980 KB Output is correct
29 Correct 86 ms 4072 KB Output is correct
30 Correct 86 ms 3864 KB Output is correct
31 Correct 88 ms 4020 KB Output is correct
32 Correct 91 ms 4040 KB Output is correct
33 Correct 93 ms 4088 KB Output is correct
34 Correct 91 ms 3968 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 324 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 14 ms 992 KB Output is correct
9 Correct 27 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 19 ms 1152 KB Output is correct
12 Correct 29 ms 1664 KB Output is correct
13 Correct 28 ms 1584 KB Output is correct
14 Correct 36 ms 1536 KB Output is correct
15 Correct 81 ms 3696 KB Output is correct
16 Correct 90 ms 3740 KB Output is correct
17 Correct 77 ms 3764 KB Output is correct
18 Correct 76 ms 3480 KB Output is correct
19 Correct 79 ms 3772 KB Output is correct
20 Correct 82 ms 3800 KB Output is correct
21 Correct 77 ms 3824 KB Output is correct
22 Correct 78 ms 3596 KB Output is correct
23 Correct 84 ms 3840 KB Output is correct
24 Correct 88 ms 3900 KB Output is correct
25 Correct 80 ms 3964 KB Output is correct
26 Correct 79 ms 3872 KB Output is correct
27 Correct 84 ms 3864 KB Output is correct
28 Correct 87 ms 3980 KB Output is correct
29 Correct 86 ms 4072 KB Output is correct
30 Correct 86 ms 3864 KB Output is correct
31 Correct 88 ms 4020 KB Output is correct
32 Correct 91 ms 4040 KB Output is correct
33 Correct 93 ms 4088 KB Output is correct
34 Correct 91 ms 3968 KB Output is correct
35 Incorrect 90 ms 4340 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -