oj.uz

Submission #113822

# Submission time Handle Problem Language Result Execution time Memory
113822 2019-05-28T14:29:08 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
75 / 100
 191 ms 5288 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) {
	assert(u.size() == v.size());
	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]);
	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;
	}

	int mid = ((int)v.size()) / 2 - 1;

	vector<int> l, r, dl, dr;
	int last = 0;
	for(int i = 0; i <= mid; i++) {
		int rep = Query(v[i]);
		if(rep == last) {
			l.emplace_back(v[i]);
		}
		last = rep;
	}
	for(int i = 0; i <= mid; i++) {
		int rep = Query(v[i]);
		if(rep == last) {
			l.emplace_back(v[i]);
		}
		last = rep;
	}
	last = 0;
	for(int i = mid + 1; i < v.size(); i++) {
		int rep = Query(v[i]);
		if(rep == last) {
			r.emplace_back(v[i]);
		}
		last = rep;
	}
	for(int i = mid + 1; i < v.size(); i++) {
		int rep = Query(v[i]);
		if(rep == last) {
			r.emplace_back(v[i]);
		}
		last = rep;
	}
	set<int> sl(l.begin(), l.end()), sr(r.begin(), r.end());
	for(int i = 0; i <= mid; i++) {
		if(sl.find(v[i]) == sl.end()) {
			dl.emplace_back(v[i]);
		}
	}
	for(int i = mid + 1; i < v.size(); i++) {
		if(sr.find(v[i]) == sr.end()) {
			dr.emplace_back(v[i]);
		}
	}
	together(l);
	together(r);
	scattered(dl, dr, 0);
}

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:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = mid + 1; i < v.size(); i++) {
                        ~~^~~~~~~~~~
minerals.cpp:35:19: 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:90:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = mid + 1; i < v.size(); i++) {
                       ~~^~~~~~~~~~
minerals.cpp:97:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = mid + 1; i < v.size(); i++) {
                       ~~^~~~~~~~~~
minerals.cpp:110:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = mid + 1; i < v.size(); i++) {
                       ~~^~~~~~~~~~
minerals.cpp: In function 'void scattered(std::vector<int>, std::vector<int>, int)':
minerals.cpp:42:4: 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 384 KB Output is correct
3 Correct 2 ms 256 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 4 ms 512 KB Output is correct
2 Correct 6 ms 640 KB Output is correct
3 Correct 10 ms 768 KB Output is correct
4 Correct 20 ms 1280 KB Output is correct
5 Correct 42 ms 2176 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 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 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 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 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 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 KB Output is correct
19 Correct 119 ms 5288 KB Output is correct
20 Correct 120 ms 5180 KB Output is correct
21 Correct 118 ms 5228 KB Output is correct
22 Correct 127 ms 4980 KB Output is correct

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 KB Output is correct
19 Correct 119 ms 5288 KB Output is correct
20 Correct 120 ms 5180 KB Output is correct
21 Correct 118 ms 5228 KB Output is correct
22 Correct 127 ms 4980 KB Output is correct
23 Incorrect 120 ms 5256 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 KB Output is correct
19 Correct 119 ms 5288 KB Output is correct
20 Correct 120 ms 5180 KB Output is correct
21 Correct 118 ms 5228 KB Output is correct
22 Correct 127 ms 4980 KB Output is correct
23 Incorrect 120 ms 5256 KB Wrong Answer [2]
24 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 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 KB Output is correct
19 Correct 119 ms 5288 KB Output is correct
20 Correct 120 ms 5180 KB Output is correct
21 Correct 118 ms 5228 KB Output is correct
22 Correct 127 ms 4980 KB Output is correct
23 Incorrect 120 ms 5256 KB Wrong Answer [2]
24 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 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 20 ms 1280 KB Output is correct
9 Correct 42 ms 2176 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 26 ms 1536 KB Output is correct
12 Correct 41 ms 2176 KB Output is correct
13 Correct 39 ms 2168 KB Output is correct
14 Correct 40 ms 2048 KB Output is correct
15 Correct 127 ms 5036 KB Output is correct
16 Correct 126 ms 4984 KB Output is correct
17 Correct 191 ms 5056 KB Output is correct
18 Correct 113 ms 4912 KB Output is correct
19 Correct 119 ms 5288 KB Output is correct
20 Correct 120 ms 5180 KB Output is correct
21 Correct 118 ms 5228 KB Output is correct
22 Correct 127 ms 4980 KB Output is correct
23 Incorrect 120 ms 5256 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -