oj.uz

Submission #120697

# Submission time Handle Problem Language Result Execution time Memory
120697 2019-06-25T08:29:18 Z 윤교준(#2960) Minerals (JOI19_minerals) C++14
90 / 100
 192 ms 5032 KB 
#include "minerals.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
using namespace std;
typedef pair<int, int> pii;
mt19937 mtrd(time(0));

const int MAXN = 100055;

void solve(vector<int>, vector<int>);
void solve(vector<int>, vector<int>, vector<int>);

bitset<MAXN> chk;

int ask(int c) {
	chk[c] = !chk[c];
	return Query(c);
}

vector<pii> AnsV;
int Delta;

void wellsolve(vector<int> A, vector<int> BL, vector<int> BR) {
	int N = sz(A), M = N >> 1, K = N-M;
	if(sz(BL) > sz(BR)) swap(BL, BR);
	if(BL.empty()) {
		solve(A, BR);
		return;
	}
	if(sz(BL) < abs(M - sz(BL))) {
		for(int v : BL) {
			ask(v);
			BR.eb(v);
		}
		solve(A, BR);
		return;
	} else {
		if(!chk[BL[0]]) swap(BL, BR);
		solve(A, BL, BR);
		return;
	}
}

void solve(vector<int> A, vector<int> B) {
	int N = sz(A), M = N >> 1, K = N-M;
	if(N < 1) return;
	if(1 == N) {
		AnsV.eb(A[0], B[0]);
		if(chk[A[0]] || chk[B[0]]) Delta++;
		return;
	}
	shuffle(allv(A), mtrd);
	shuffle(allv(B), mtrd);
	vector<int> AL, AR, BL, BR;
	if(!chk[A[0]] && !chk[B[0]]) { // off off
		if(2 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(1 == ret) {
				AnsV.eb(A[0], B[0]);
				AnsV.eb(A[1], B[1]);
				Delta += 1;
			} else {
				AnsV.eb(A[0], B[1]);
				AnsV.eb(A[1], B[0]);
				Delta += 2;
			}
			return;
		}
		if(3 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(1 == ret) {
				AnsV.eb(A[0], B[0]);
				Delta++;
				solve({A[1], A[2]}, {B[1], B[2]});
				return;
			}
			ret = ask(B[1]) - Delta;
			if(2 == ret) {
				AnsV.eb(A[0], B[1]);
				ret = ask(A[1]) - Delta;
				if(2 == ret) {
					AnsV.eb(A[1], B[0]);
					AnsV.eb(A[2], B[2]);
					Delta += 2;
					return;
				}
				AnsV.eb(A[2], B[0]);
				AnsV.eb(A[1], B[2]);
				Delta += 3;
				return;
			}
			AnsV.eb(A[0], B[2]);
			Delta++;
			solve({A[1], A[2]}, {B[0], B[1]});
			return;
		}
		for(int i = 0; i < M; i++) {
			ask(A[i]);
			AL.eb(A[i]);
		}
		for(int i = M; i < N; i++) AR.eb(A[i]);
		{
			int i = 0, h = M;
			for(int v, ret; sz(BL) < M && sz(BR) < K; i++) {
				v = B[i];
				ret = ask(v) - Delta;
				if(h == ret) {
					BL.eb(v);
				} else {
					BR.eb(v);
				}
				h = ret;
			}
			vector<int> Bleft;
			for(int j = i; j < N; j++) Bleft.eb(B[j]);
			if(sz(BL) == M) {
				Delta += sz(BR);
				solve(AL, BL);
				Delta -= sz(BR);
				wellsolve(AR, BR, Bleft);
				return;
			} else {
				Delta += M;
				solve(AR, BR);
				Delta -= M;
				wellsolve(AL, BL, Bleft);
				return;
			}
		}
	} else if(!chk[A[0]] && chk[B[0]]) { // off on
		solve(B, A);
		return;
	} else if(!chk[B[0]]) { // on off
		if(2 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(2 == ret) {
				AnsV.eb(A[0], B[0]);
				AnsV.eb(A[1], B[1]);
				Delta += 2;
			} else {
				AnsV.eb(A[0], B[1]);
				AnsV.eb(A[1], B[0]);
				Delta += 1;
			}
			return;
		}
		if(3 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(3 == ret) {
				AnsV.eb(A[0], B[0]);
				Delta++;
				solve({A[1], A[2]}, {B[1], B[2]});
				return;
			}
			ret = ask(B[1]) - Delta;
			if(3 == ret) {
				AnsV.eb(A[0], B[1]);
				ret = ask(A[1]) - Delta;
				if(3 == ret) {
					AnsV.eb(A[1], B[0]);
					AnsV.eb(A[2], B[2]);
					Delta += 3;
					return;
				}
				AnsV.eb(A[1], B[2]);
				AnsV.eb(A[2], B[0]);
				Delta += 2;
				return;
			}
			AnsV.eb(A[0], B[2]);
			solve({A[1], A[2]}, {B[0], B[1]});
			return;
		}
		for(int i = 0; i < M; i++) AL.eb(A[i]);
		for(int i = M; i < N; i++) {
			ask(A[i]);
			AR.eb(A[i]);
		}
		{
			int i = 0, h = M;
			for(int v, ret; sz(BL) < M && sz(BR) < K; i++) {
				v = B[i];
				ret = ask(v) - Delta;
				if(h == ret) {
					BL.eb(v);
				} else {
					BR.eb(v);
				}
				h = ret;
			}
			vector<int> Bleft;
			for(int j = i; j < N; j++) Bleft.eb(B[j]);
			if(sz(BL) == M) {
				Delta += sz(BR);
				solve(AL, BL);
				Delta -= sz(BR);
				wellsolve(AR, BR, Bleft);
				return;
			} else {
				Delta += M;
				solve(AR, BR);
				Delta -= M;
				wellsolve(AL, BL, Bleft);
				return;
			}
		}
	} else { // on on
		if(2 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(1 == ret) {
				AnsV.eb(A[0], B[0]);
				AnsV.eb(A[1], B[1]);
				Delta += 1;
			} else {
				AnsV.eb(A[0], B[1]);
				AnsV.eb(A[1], B[0]);
				Delta += 2;
			}
			return;
		}
		if(3 == N) {
			ask(A[0]);
			int ret = ask(B[0]) - Delta;
			if(2 == ret) {
				AnsV.eb(A[0], B[0]);
				solve({A[1], A[2]}, {B[1], B[2]});
				return;
			}
			ret = ask(B[1]) - Delta;
			if(2 == ret) {
				AnsV.eb(A[0], B[1]);
				ret = ask(A[1]) - Delta;
				if(1 == ret) {
					AnsV.eb(A[1], B[0]);
					AnsV.eb(A[2], B[2]);
					Delta++;
					return;
				}
				AnsV.eb(A[1], B[2]);
				AnsV.eb(A[2], B[0]);
				Delta += 2;
				return;
			}
			AnsV.eb(A[0], B[2]);
			Delta++;
			solve({A[1], A[2]}, {B[0], B[1]});
			return;
		}
		for(int i = 0; i < M; i++) AL.eb(A[i]);
		for(int i = M; i < N; i++) {
			ask(A[i]);
			AR.eb(A[i]);
		}
		{
			int i = 0, h = N;
			for(int v, ret; sz(BL) < M && sz(BR) < K; i++) {
				v = B[i];
				ret = ask(v) - Delta;
				if(ret == h) {
					BL.eb(v);
				} else {
					BR.eb(v);
				}
				h = ret;
			}
			vector<int> Bleft;
			for(int j = i; j < N; j++) Bleft.eb(B[j]);
			if(sz(BL) == M) {
				Delta += K - sz(BR);
				solve(AL, BL);
				Delta -= K - sz(BR);
				wellsolve(AR, BR, Bleft);
				return;
			} else {
				Delta += M;
				solve(AR, BR);
				Delta -= M;
				wellsolve(AL, BL, Bleft);
				return;
			}
		}
	}
}

void solve(vector<int> A, vector<int> Bon, vector<int> Boff) {
	int N = sz(A), M = N >> 1, K = N-M;
	if(Bon.empty()) {
		solve(A, Boff);
		return;
	}
	if(Boff.empty()) {
		solve(A, Bon);
		return;
	}
	if(!chk[Bon[0]]) swap(Bon, Boff);
	shuffle(allv(A), mtrd);
	shuffle(allv(Bon), mtrd);
	shuffle(allv(Boff), mtrd);
	if(!chk[A[0]]) { // off
		if(2 == N) {
			int ret = ask(A[0]) - Delta;
			if(1 == ret) {
				AnsV.eb(A[0], Bon[0]);
				AnsV.eb(A[1], Boff[0]);
				Delta++;
				return;
			}
			AnsV.eb(A[0], Boff[0]);
			AnsV.eb(A[1], Bon[0]);
			Delta += 2;
			return;
		}
		for(; sz(Bon) < M;) {
			ask(Boff.back());
			Bon.eb(Boff.back());
			Boff.pop_back();
		}
		for(; M < sz(Bon);) {
			ask(Bon.back());
			Boff.eb(Bon.back());
			Bon.pop_back();
		}
		vector<int> AL, AR;
		{
			int i = 0, h = M;
			for(int v, ret; sz(AL) < M && sz(AR) < K; i++) {
				v = A[i];
				ret = ask(v) - Delta;
				if(h == ret) {
					AL.eb(v);
				} else {
					AR.eb(v);
				}
				h = ret;
			}
			if(sz(AL) == M) {
				Delta += sz(AR);
				solve(AL, Bon);
				Delta -= sz(AR);
				vector<int> Aoff;
				for(int j = i; j < N; j++) Aoff.eb(A[j]);
				wellsolve(Boff, AR, Aoff);
				return;
			} else {
				Delta += M;
				solve(AR, Boff);
				Delta -= M;
				vector<int> Aoff;
				for(int j = i; j < N; j++) Aoff.eb(A[j]);
				wellsolve(Bon, AL, Aoff);
				return;
			}
		}
	} else { // on
		if(2 == N) {
			int ret = ask(A[0]) - Delta;
			if(1 == ret) {
				AnsV.eb(A[0], Boff[0]);
				AnsV.eb(A[1], Bon[0]);
				Delta++;
				return;
			}
			AnsV.eb(A[0], Bon[0]);
			AnsV.eb(A[1], Boff[0]);
			Delta += 2;
			return;
		}
		for(; sz(Bon) < M;) {
			ask(Boff.back());
			Bon.eb(Boff.back());
			Boff.pop_back();
		}
		for(; M < sz(Bon);) {
			ask(Bon.back());
			Boff.eb(Bon.back());
			Bon.pop_back();
		}
		vector<int> AL, AR;
		{
			int i = 0, h = N;
			for(int v, ret; sz(AL) < M && sz(AR) < K; i++) {
				v = A[i];
				ret = ask(v) - Delta;
				if(h == ret) {
					AL.eb(v);
				} else {
					AR.eb(v);
				}
				h = ret;
			}
			if(sz(AL) == M) {
				Delta += K - sz(AR);
				solve(AL, Bon);
				Delta -= K - sz(AR);
				vector<int> Aon;
				for(int j = i; j < N; j++) Aon.eb(A[j]);
				wellsolve(Boff, Aon, AR);
				return;
			} else {
				Delta += M;
				solve(AR, Boff);
				Delta -= M;
				vector<int> Aon;
				for(int j = i; j < N; j++) Aon.eb(A[j]);
				wellsolve(Bon, Aon, AL);
				return;
			}
		}
	}
}


void Solve(int N) {
	{
		vector<int> O, A, B;
		for(int i = 1; i <= N*2; i++) O.eb(i);
		shuffle(allv(O), mtrd);

		int oi = 0, h = 0;
		for(int i, ret; h < N && oi < N*2; oi++) {
			i = O[oi];
			ret = ask(i);
			if(ret == h) {
				B.eb(i);
			} else {
				A.eb(i);
			}
			h = ret;
		}
		vector<int> Bleft;
		for(int i = oi; i < N*2; i++) Bleft.eb(O[i]);
		wellsolve(A, B, Bleft);
	}

	for(auto &v : AnsV) Answer(v.first, v.second);
}

Compilation message

minerals.cpp: In function 'void wellsolve(std::vector<int>, std::vector<int>, std::vector<int>)':
minerals.cpp:26:29: warning: unused variable 'K' [-Wunused-variable]
  int N = sz(A), M = N >> 1, K = N-M;
                             ^

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 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

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 556 KB Output is correct
3 Correct 8 ms 768 KB Output is correct
4 Correct 17 ms 1152 KB Output is correct
5 Correct 32 ms 1792 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 KB Output is correct
19 Correct 192 ms 4596 KB Output is correct
20 Correct 94 ms 4592 KB Output is correct
21 Correct 91 ms 4720 KB Output is correct
22 Correct 92 ms 4588 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 KB Output is correct
19 Correct 192 ms 4596 KB Output is correct
20 Correct 94 ms 4592 KB Output is correct
21 Correct 91 ms 4720 KB Output is correct
22 Correct 92 ms 4588 KB Output is correct
23 Correct 132 ms 4680 KB Output is correct
24 Correct 97 ms 4788 KB Output is correct
25 Correct 100 ms 4704 KB Output is correct
26 Correct 96 ms 4512 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 KB Output is correct
19 Correct 192 ms 4596 KB Output is correct
20 Correct 94 ms 4592 KB Output is correct
21 Correct 91 ms 4720 KB Output is correct
22 Correct 92 ms 4588 KB Output is correct
23 Correct 132 ms 4680 KB Output is correct
24 Correct 97 ms 4788 KB Output is correct
25 Correct 100 ms 4704 KB Output is correct
26 Correct 96 ms 4512 KB Output is correct
27 Correct 100 ms 4764 KB Output is correct
28 Correct 100 ms 4836 KB Output is correct
29 Correct 99 ms 4720 KB Output is correct
30 Correct 102 ms 4612 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 KB Output is correct
19 Correct 192 ms 4596 KB Output is correct
20 Correct 94 ms 4592 KB Output is correct
21 Correct 91 ms 4720 KB Output is correct
22 Correct 92 ms 4588 KB Output is correct
23 Correct 132 ms 4680 KB Output is correct
24 Correct 97 ms 4788 KB Output is correct
25 Correct 100 ms 4704 KB Output is correct
26 Correct 96 ms 4512 KB Output is correct
27 Correct 100 ms 4764 KB Output is correct
28 Correct 100 ms 4836 KB Output is correct
29 Correct 99 ms 4720 KB Output is correct
30 Correct 102 ms 4612 KB Output is correct
31 Correct 106 ms 4872 KB Output is correct
32 Correct 113 ms 4876 KB Output is correct
33 Correct 108 ms 4908 KB Output is correct
34 Correct 105 ms 4756 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 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 556 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1152 KB Output is correct
9 Correct 32 ms 1792 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 23 ms 1400 KB Output is correct
12 Correct 33 ms 1964 KB Output is correct
13 Correct 34 ms 1920 KB Output is correct
14 Correct 34 ms 1916 KB Output is correct
15 Correct 98 ms 4432 KB Output is correct
16 Correct 96 ms 4472 KB Output is correct
17 Correct 98 ms 4520 KB Output is correct
18 Correct 94 ms 4392 KB Output is correct
19 Correct 192 ms 4596 KB Output is correct
20 Correct 94 ms 4592 KB Output is correct
21 Correct 91 ms 4720 KB Output is correct
22 Correct 92 ms 4588 KB Output is correct
23 Correct 132 ms 4680 KB Output is correct
24 Correct 97 ms 4788 KB Output is correct
25 Correct 100 ms 4704 KB Output is correct
26 Correct 96 ms 4512 KB Output is correct
27 Correct 100 ms 4764 KB Output is correct
28 Correct 100 ms 4836 KB Output is correct
29 Correct 99 ms 4720 KB Output is correct
30 Correct 102 ms 4612 KB Output is correct
31 Correct 106 ms 4872 KB Output is correct
32 Correct 113 ms 4876 KB Output is correct
33 Correct 108 ms 4908 KB Output is correct
34 Correct 105 ms 4756 KB Output is correct
35 Incorrect 110 ms 5032 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -