oj.uz

Submission #120598

# Submission time Handle Problem Language Result Execution time Memory
120598 2019-06-25T05:06:42 Z 윤교준(#2960) Minerals (JOI19_minerals) C++14
80 / 100
 110 ms 4252 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;

bitset<MAXN> chk;

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

vector<pii> AnsV;
int Delta;

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;
		}
		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;
			}
			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 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;
		}
		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;
		}
		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(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);
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 1 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 3 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 9 ms 640 KB Output is correct
4 Correct 16 ms 1152 KB Output is correct
5 Correct 31 ms 1664 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 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 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 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 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 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 KB Output is correct
19 Correct 93 ms 4012 KB Output is correct
20 Correct 100 ms 3984 KB Output is correct
21 Correct 90 ms 4136 KB Output is correct
22 Correct 94 ms 3956 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 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 KB Output is correct
19 Correct 93 ms 4012 KB Output is correct
20 Correct 100 ms 3984 KB Output is correct
21 Correct 90 ms 4136 KB Output is correct
22 Correct 94 ms 3956 KB Output is correct
23 Correct 110 ms 4128 KB Output is correct
24 Correct 103 ms 4132 KB Output is correct
25 Correct 99 ms 4252 KB Output is correct
26 Correct 94 ms 3880 KB Output is correct

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 KB Output is correct
19 Correct 93 ms 4012 KB Output is correct
20 Correct 100 ms 3984 KB Output is correct
21 Correct 90 ms 4136 KB Output is correct
22 Correct 94 ms 3956 KB Output is correct
23 Correct 110 ms 4128 KB Output is correct
24 Correct 103 ms 4132 KB Output is correct
25 Correct 99 ms 4252 KB Output is correct
26 Correct 94 ms 3880 KB Output is correct
27 Incorrect 98 ms 4100 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 KB Output is correct
19 Correct 93 ms 4012 KB Output is correct
20 Correct 100 ms 3984 KB Output is correct
21 Correct 90 ms 4136 KB Output is correct
22 Correct 94 ms 3956 KB Output is correct
23 Correct 110 ms 4128 KB Output is correct
24 Correct 103 ms 4132 KB Output is correct
25 Correct 99 ms 4252 KB Output is correct
26 Correct 94 ms 3880 KB Output is correct
27 Incorrect 98 ms 4100 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 1 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 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 9 ms 640 KB Output is correct
8 Correct 16 ms 1152 KB Output is correct
9 Correct 31 ms 1664 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 22 ms 1424 KB Output is correct
12 Correct 32 ms 1712 KB Output is correct
13 Correct 31 ms 1664 KB Output is correct
14 Correct 31 ms 1540 KB Output is correct
15 Correct 93 ms 3888 KB Output is correct
16 Correct 91 ms 3948 KB Output is correct
17 Correct 90 ms 3964 KB Output is correct
18 Correct 88 ms 3744 KB Output is correct
19 Correct 93 ms 4012 KB Output is correct
20 Correct 100 ms 3984 KB Output is correct
21 Correct 90 ms 4136 KB Output is correct
22 Correct 94 ms 3956 KB Output is correct
23 Correct 110 ms 4128 KB Output is correct
24 Correct 103 ms 4132 KB Output is correct
25 Correct 99 ms 4252 KB Output is correct
26 Correct 94 ms 3880 KB Output is correct
27 Incorrect 98 ms 4100 KB Wrong Answer [2]
28 Halted 0 ms 0 KB -