제출 #861106

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
861106		vjudge1	Xylophone (JOI18_xylophone)	C++98	0 / 100	1 ms	344 KiB

xylophone

#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
void solve(int n) {
	int A[n + 1];	
 
    A[2] = query(1, 2);
    for (int i = 2; i < n; i++) {
        int x = query(i, i + 1);
		int y = query(i - 1, i + 1);
        A[i + 1] = A[i] + x * (A[i] - A[i - 1] < 0 ? 1 : -1) * (y == x + abs(A[i] - A[i - 1]) ? -1 : 1);
    }
    int mn = *min_element(A + 1, A + n + 1);
	int u, v;
    for (int i = 1; i <= n; i++) {
        A[i] -= mn;
        if (!A[i]) u = i;
        if (A[i] == n - 1) v = i;
    }
    bool flag = u < v;
    for (int i = 1; i <= n; i++) answer(i, flag ? A[i] + 1 : n - A[i]);
}

컴파일 시 표준 에러 (stderr) 메시지

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:21:40: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized]
   21 |     for (int i = 1; i <= n; i++) answer(i, flag ? A[i] + 1 : n - A[i]);
      |                                  ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
xylophone.cpp:21:40: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 0 / 11
• Subtask 2: 0 / 36
• Subtask 3: 0 / 53