oj.uz

Submission #113877

# Submission time Handle Problem Language Result Execution time Memory
113877 2019-05-29T01:49:03 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
90 / 100
 77 ms 4144 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 solve(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());
	int mid = u.size() >> 1;
	int last;
	if(f) {
		for(int i = mid; 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), ru, rv(v.begin() + mid, 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;
		}
	}
	solve(lu, lv, 1);
	solve(ru, rv, 0);
}

void split(vector<int> v) {
	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;
	}
	solve(l, r, 1);
}

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

Compilation message

minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, int)':
minerals.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = mid; i < v.size(); i++) {
                    ~~^~~~~~~~~~
minerals.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < u.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void split(std::vector<int>)':
minerals.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < v.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, int)':
minerals.cpp:40:4: 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 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 4 ms 512 KB Output is correct
3 Correct 6 ms 640 KB Output is correct
4 Correct 11 ms 1024 KB Output is correct
5 Correct 21 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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 KB Output is correct
19 Correct 66 ms 3740 KB Output is correct
20 Correct 63 ms 3732 KB Output is correct
21 Correct 57 ms 3832 KB Output is correct
22 Correct 55 ms 3584 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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 KB Output is correct
19 Correct 66 ms 3740 KB Output is correct
20 Correct 63 ms 3732 KB Output is correct
21 Correct 57 ms 3832 KB Output is correct
22 Correct 55 ms 3584 KB Output is correct
23 Correct 66 ms 3836 KB Output is correct
24 Correct 62 ms 4004 KB Output is correct
25 Correct 57 ms 3844 KB Output is correct
26 Correct 57 ms 3688 KB Output is correct

Subtask #7
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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 KB Output is correct
19 Correct 66 ms 3740 KB Output is correct
20 Correct 63 ms 3732 KB Output is correct
21 Correct 57 ms 3832 KB Output is correct
22 Correct 55 ms 3584 KB Output is correct
23 Correct 66 ms 3836 KB Output is correct
24 Correct 62 ms 4004 KB Output is correct
25 Correct 57 ms 3844 KB Output is correct
26 Correct 57 ms 3688 KB Output is correct
27 Correct 66 ms 4084 KB Output is correct
28 Correct 65 ms 3964 KB Output is correct
29 Correct 59 ms 4028 KB Output is correct
30 Correct 60 ms 3888 KB Output is correct

Subtask #8
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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 KB Output is correct
19 Correct 66 ms 3740 KB Output is correct
20 Correct 63 ms 3732 KB Output is correct
21 Correct 57 ms 3832 KB Output is correct
22 Correct 55 ms 3584 KB Output is correct
23 Correct 66 ms 3836 KB Output is correct
24 Correct 62 ms 4004 KB Output is correct
25 Correct 57 ms 3844 KB Output is correct
26 Correct 57 ms 3688 KB Output is correct
27 Correct 66 ms 4084 KB Output is correct
28 Correct 65 ms 3964 KB Output is correct
29 Correct 59 ms 4028 KB Output is correct
30 Correct 60 ms 3888 KB Output is correct
31 Correct 69 ms 4136 KB Output is correct
32 Correct 77 ms 4016 KB Output is correct
33 Correct 63 ms 4144 KB Output is correct
34 Correct 65 ms 3892 KB Output is correct

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 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 4 ms 512 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 11 ms 1024 KB Output is correct
9 Correct 21 ms 1536 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 22 ms 1536 KB Output is correct
13 Correct 24 ms 1656 KB Output is correct
14 Correct 21 ms 1596 KB Output is correct
15 Correct 58 ms 3740 KB Output is correct
16 Correct 59 ms 3696 KB Output is correct
17 Correct 53 ms 3664 KB Output is correct
18 Correct 57 ms 3636 KB Output is correct
19 Correct 66 ms 3740 KB Output is correct
20 Correct 63 ms 3732 KB Output is correct
21 Correct 57 ms 3832 KB Output is correct
22 Correct 55 ms 3584 KB Output is correct
23 Correct 66 ms 3836 KB Output is correct
24 Correct 62 ms 4004 KB Output is correct
25 Correct 57 ms 3844 KB Output is correct
26 Correct 57 ms 3688 KB Output is correct
27 Correct 66 ms 4084 KB Output is correct
28 Correct 65 ms 3964 KB Output is correct
29 Correct 59 ms 4028 KB Output is correct
30 Correct 60 ms 3888 KB Output is correct
31 Correct 69 ms 4136 KB Output is correct
32 Correct 77 ms 4016 KB Output is correct
33 Correct 63 ms 4144 KB Output is correct
34 Correct 65 ms 3892 KB Output is correct
35 Incorrect 67 ms 4096 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -