oj.uz

Submission #120690

# Submission time Handle Problem Language Result Execution time Memory
120690 2019-06-25T08:23:02 Z 윤교준(#2960) Minerals (JOI19_minerals) C++14
85 / 100
 110 ms 4208 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;
			}
			if(sz(BL) == M) {
				if(sz(BR) < K - sz(BR)) {
					for(int v : BR) ask(v);
				} else {
					for(int j = i; j < N; j++) ask(B[j]);
				}
				for(int j = i; j < N; j++) BR.eb(B[j]);
			} else {
				if(sz(BL) < M - sz(BL)) {
					for(int v : BL) ask(v);
				} else {
					for(int j = i; j < N; j++) ask(B[j]);
				}
				for(int j = i; j < N; j++) BL.eb(B[j]);
			}
		}
		if(chk[BR[0]]) Delta += K;
		solve(AL, BL);
		if(chk[BR[0]]) Delta -= K;
		solve(AR, BR);
	} 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;
			}
			if(sz(BL) == M) {
				if(sz(BR) < K - sz(BR)) {
					for(int v : BR) ask(v);
				} else {
					for(int j = i; j < N; j++) ask(B[j]);
				}
				for(int j = i; j < N; j++) BR.eb(B[j]);
			} else {
				if(sz(BL) < M - sz(BL)) {
					for(int v : BL) ask(v);
				} else {
					for(int j = i; j < N; j++) ask(B[j]);
				}
				for(int j = i; j < N; j++) BL.eb(B[j]);
			}
		}
		if(chk[BR[0]]) Delta += K;
		solve(AL, BL);
		if(chk[BR[0]]) Delta -= K;
		solve(AR, BR);
	}
}

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);
	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;
		}
		if(N+N - oi < oi - N) {
			for(int i = oi; i < N*2; i++) ask(O[i]);
		} else {
			for(int v : B) ask(v);
		}
		for(int i = oi; i < N*2; i++) B.eb(O[i]);

		solve(A, B);
	}

	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 256 KB Output is correct
2 Correct 2 ms 256 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 4 ms 512 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 8 ms 768 KB Output is correct
4 Correct 17 ms 1024 KB Output is correct
5 Correct 32 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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 KB Output is correct
19 Correct 95 ms 4124 KB Output is correct
20 Correct 96 ms 4072 KB Output is correct
21 Correct 103 ms 3936 KB Output is correct
22 Correct 92 ms 3952 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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 KB Output is correct
19 Correct 95 ms 4124 KB Output is correct
20 Correct 96 ms 4072 KB Output is correct
21 Correct 103 ms 3936 KB Output is correct
22 Correct 92 ms 3952 KB Output is correct
23 Correct 105 ms 4180 KB Output is correct
24 Correct 97 ms 4068 KB Output is correct
25 Correct 96 ms 4140 KB Output is correct
26 Correct 97 ms 3972 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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 KB Output is correct
19 Correct 95 ms 4124 KB Output is correct
20 Correct 96 ms 4072 KB Output is correct
21 Correct 103 ms 3936 KB Output is correct
22 Correct 92 ms 3952 KB Output is correct
23 Correct 105 ms 4180 KB Output is correct
24 Correct 97 ms 4068 KB Output is correct
25 Correct 96 ms 4140 KB Output is correct
26 Correct 97 ms 3972 KB Output is correct
27 Correct 98 ms 4112 KB Output is correct
28 Correct 101 ms 4208 KB Output is correct
29 Correct 110 ms 4132 KB Output is correct
30 Correct 98 ms 4080 KB Output is correct

Subtask #8
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 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 KB Output is correct
19 Correct 95 ms 4124 KB Output is correct
20 Correct 96 ms 4072 KB Output is correct
21 Correct 103 ms 3936 KB Output is correct
22 Correct 92 ms 3952 KB Output is correct
23 Correct 105 ms 4180 KB Output is correct
24 Correct 97 ms 4068 KB Output is correct
25 Correct 96 ms 4140 KB Output is correct
26 Correct 97 ms 3972 KB Output is correct
27 Correct 98 ms 4112 KB Output is correct
28 Correct 101 ms 4208 KB Output is correct
29 Correct 110 ms 4132 KB Output is correct
30 Correct 98 ms 4080 KB Output is correct
31 Incorrect 102 ms 4180 KB Wrong Answer [2]
32 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 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 17 ms 1024 KB Output is correct
9 Correct 32 ms 1536 KB Output is correct
10 Correct 3 ms 412 KB Output is correct
11 Correct 21 ms 1280 KB Output is correct
12 Correct 31 ms 1664 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1584 KB Output is correct
15 Correct 87 ms 3952 KB Output is correct
16 Correct 88 ms 3976 KB Output is correct
17 Correct 87 ms 3952 KB Output is correct
18 Correct 85 ms 3820 KB Output is correct
19 Correct 95 ms 4124 KB Output is correct
20 Correct 96 ms 4072 KB Output is correct
21 Correct 103 ms 3936 KB Output is correct
22 Correct 92 ms 3952 KB Output is correct
23 Correct 105 ms 4180 KB Output is correct
24 Correct 97 ms 4068 KB Output is correct
25 Correct 96 ms 4140 KB Output is correct
26 Correct 97 ms 3972 KB Output is correct
27 Correct 98 ms 4112 KB Output is correct
28 Correct 101 ms 4208 KB Output is correct
29 Correct 110 ms 4132 KB Output is correct
30 Correct 98 ms 4080 KB Output is correct
31 Incorrect 102 ms 4180 KB Wrong Answer [2]
32 Halted 0 ms 0 KB -