oj.uz

답안 #113808

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
113808 2019-05-28T13:07:45 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
40 / 100
 85 ms 5020 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

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 640 KB Output is correct
3 Correct 8 ms 768 KB Output is correct
4 Correct 18 ms 1280 KB Output is correct
5 Correct 33 ms 2288 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 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 640 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 18 ms 1280 KB Output is correct
9 Correct 33 ms 2288 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 21 ms 1664 KB Output is correct
12 Correct 35 ms 2296 KB Output is correct
13 Correct 33 ms 2176 KB Output is correct
14 Correct 35 ms 2040 KB Output is correct
15 Incorrect 85 ms 5020 KB Wrong Answer [2]
16 Halted 0 ms 0 KB -