Submission #860927

#	Time	Username	Problem	Language	Result	Execution time	Memory
860927		vjudge1	Xylophone (JOI18_xylophone)	C++17	Compilation error	0 ms	0 KiB

xylophone

#include <bits/stdc++.h>
using namespace std;
int a[5001];
void solve(int n) {
    int x, y, i, u, v, mn;
    a[2] = query(1, 2);
    for (i = 2; i < n; i++) {
        x = query(i, i + 1); 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);
    }
    mn = min(a + 1, a + n + 1);
    for (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]);
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:7:12: error: 'query' was not declared in this scope
    7 |     a[2] = query(1, 2);
      |            ^~~~~
xylophone.cpp:12:13: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   12 |     mn = min(a + 1, a + n + 1);
      |          ~~~^~~~~~~~~~~~~~~~~~
      |             |
      |             int*
xylophone.cpp:19:34: error: 'answer' was not declared in this scope
   19 |     for (int i = 1; i <= n; i++) answer(i, flag ? a[i] + 1 : n - a[i]);
      |                                  ^~~~~~