oj.uz

Submission #113811

# Submission time Handle Problem Language Result Execution time Memory
113811 2019-05-28T13:10:03 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
40 / 100
 89 ms 5112 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) {
	assert(u.size() == v.size());
	if(u.empty()) return;
	if(u.size() == 1) {
		Answer(u.back(), v.back());
		return;
	}
	int mid = ((int)u.size() - 2) >> 1;
	int last;
	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++) {
		int rep = Query(u[i]);
		if(rep == last) {
			lu.emplace_back(u[i]);
		} else {
			ru.emplace_back(u[i]);
		}
		last = rep;
	}
	for(int i = 0; i <= mid; i++) {
		Query(v[i]);
	}
	scattered(lu, lv);
	scattered(ru, rv);
}

void together(vector<int> v) {
	if(v.empty()) return;
	if(v.size() == 2) {
		Answer(v[0], v[1]);
		return;
	}

	random_shuffle(v.begin(), v.end(), RNG());

	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);
}

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>)':
minerals.cpp:26:19: 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:69:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = mid + 1; i < v.size(); i++) {
                       ~~^~~~~~~~~~
minerals.cpp:76:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = mid + 1; i < v.size(); i++) {
                       ~~^~~~~~~~~~
minerals.cpp:89:25: 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>)':
minerals.cpp:28:3: 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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
4 Correct 17 ms 1280 KB Output is correct
5 Correct 32 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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct

Subtask #4
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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 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 304 KB Output is correct
4 Correct 2 ms 380 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 896 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 32 ms 2176 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 22 ms 1664 KB Output is correct
12 Correct 35 ms 2176 KB Output is correct
13 Correct 31 ms 2092 KB Output is correct
14 Correct 32 ms 2148 KB Output is correct
15 Incorrect 89 ms 5112 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -