oj.uz

Submission #113875

# Submission time Handle Problem Language Result Execution time Memory
113875 2019-05-29T01:26:30 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
90 / 100
 90 ms 4104 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]);
		} 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:73:19: 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 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 5 ms 512 KB Output is correct
3 Correct 8 ms 640 KB Output is correct
4 Correct 15 ms 896 KB Output is correct
5 Correct 28 ms 1580 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 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 384 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 KB Output is correct
19 Correct 78 ms 3836 KB Output is correct
20 Correct 79 ms 3840 KB Output is correct
21 Correct 79 ms 3896 KB Output is correct
22 Correct 77 ms 3648 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 KB Output is correct
19 Correct 78 ms 3836 KB Output is correct
20 Correct 79 ms 3840 KB Output is correct
21 Correct 79 ms 3896 KB Output is correct
22 Correct 77 ms 3648 KB Output is correct
23 Correct 82 ms 3960 KB Output is correct
24 Correct 81 ms 3964 KB Output is correct
25 Correct 84 ms 3828 KB Output is correct
26 Correct 84 ms 3748 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 KB Output is correct
19 Correct 78 ms 3836 KB Output is correct
20 Correct 79 ms 3840 KB Output is correct
21 Correct 79 ms 3896 KB Output is correct
22 Correct 77 ms 3648 KB Output is correct
23 Correct 82 ms 3960 KB Output is correct
24 Correct 81 ms 3964 KB Output is correct
25 Correct 84 ms 3828 KB Output is correct
26 Correct 84 ms 3748 KB Output is correct
27 Correct 86 ms 3988 KB Output is correct
28 Correct 90 ms 3976 KB Output is correct
29 Correct 85 ms 3940 KB Output is correct
30 Correct 83 ms 3828 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 KB Output is correct
19 Correct 78 ms 3836 KB Output is correct
20 Correct 79 ms 3840 KB Output is correct
21 Correct 79 ms 3896 KB Output is correct
22 Correct 77 ms 3648 KB Output is correct
23 Correct 82 ms 3960 KB Output is correct
24 Correct 81 ms 3964 KB Output is correct
25 Correct 84 ms 3828 KB Output is correct
26 Correct 84 ms 3748 KB Output is correct
27 Correct 86 ms 3988 KB Output is correct
28 Correct 90 ms 3976 KB Output is correct
29 Correct 85 ms 3940 KB Output is correct
30 Correct 83 ms 3828 KB Output is correct
31 Correct 87 ms 4104 KB Output is correct
32 Correct 87 ms 4056 KB Output is correct
33 Correct 84 ms 4100 KB Output is correct
34 Correct 85 ms 3828 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 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 5 ms 512 KB Output is correct
7 Correct 8 ms 640 KB Output is correct
8 Correct 15 ms 896 KB Output is correct
9 Correct 28 ms 1580 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 27 ms 1596 KB Output is correct
14 Correct 27 ms 1536 KB Output is correct
15 Correct 76 ms 3704 KB Output is correct
16 Correct 85 ms 3668 KB Output is correct
17 Correct 77 ms 3620 KB Output is correct
18 Correct 75 ms 3584 KB Output is correct
19 Correct 78 ms 3836 KB Output is correct
20 Correct 79 ms 3840 KB Output is correct
21 Correct 79 ms 3896 KB Output is correct
22 Correct 77 ms 3648 KB Output is correct
23 Correct 82 ms 3960 KB Output is correct
24 Correct 81 ms 3964 KB Output is correct
25 Correct 84 ms 3828 KB Output is correct
26 Correct 84 ms 3748 KB Output is correct
27 Correct 86 ms 3988 KB Output is correct
28 Correct 90 ms 3976 KB Output is correct
29 Correct 85 ms 3940 KB Output is correct
30 Correct 83 ms 3828 KB Output is correct
31 Correct 87 ms 4104 KB Output is correct
32 Correct 87 ms 4056 KB Output is correct
33 Correct 84 ms 4100 KB Output is correct
34 Correct 85 ms 3828 KB Output is correct
35 Incorrect 84 ms 4084 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -