제출 #167316

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
167316		maruii	Minerals (JOI19_minerals)	C++14	70 / 100	47 ms	2424 KiB

minerals

#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

int A[43005], S[43005];
void Solve(int N) {
	vector<int> X, Y;
	for (int i = 1, v = 0; i <= 2 * N; ++i) {
		int t = Query(i);
		if (t > v) X.push_back(i);
		else Y.push_back(i);
		v = t;
	}
	for (int i = 0; i < N; ++i) S[i] = 1;
	for (int i = 0; i < 16; ++i) {
		int v = 0, t = 0, cnt = 0;
		for (int j = 0; j < N; ++j) if (S[j] ^ (j >> i) & 1) cnt++;
		if (cnt < N - cnt) t = 1;
		for (int j = 0; j < N; ++j) if (t ^ S[j] ^ (j >> i) & 1) {
			v = Query(X[j]);
			S[j] ^= 1;
		}
		for (int j = 0; j < N; ++j) {
			int a = Query(Y[j]);
			if ((v == a) ^ t) A[j] |= 1 << i;
			v = a;
		}
	}
	for (int i = 0; i < N; ++i) Answer(Y[i], X[A[i]]);
}

컴파일 시 표준 에러 (stderr) 메시지

minerals.cpp: In function 'void Solve(int)':
minerals.cpp:17:51: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   for (int j = 0; j < N; ++j) if (S[j] ^ (j >> i) & 1) cnt++;
                                          ~~~~~~~~~^~~
minerals.cpp:19:55: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   for (int j = 0; j < N; ++j) if (t ^ S[j] ^ (j >> i) & 1) {
                                              ~~~~~~~~~^~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10