Submission #1316985

#	Time	Username	Problem	Language	Result	Execution time	Memory
1316985		pobe	Xylophone (JOI18_xylophone)	C++20	Compilation error	0 ms	0 KiB

xylophone

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define int long long
using namespace std;
using namespace __gnu_pbds;
using ordered_set = tree <int, null_type, less_equal <int>, rb_tree_tag, tree_order_statistics_node_update>;
ostream &operator <<(ostream &out, vector <int> val) {
    for (auto v : val) {
        out << v  << ' ';
    }
    return out;
}
void solve(int n) {
    vector <int> res(n);
    if (n == 1) {
        ans(1, 1);
        return;
    } else if (n == 2) {
        ans(1, 1);
        ans(2, 2);
        return;
    }
    vector <int> d(n - 1);
    for (int i = 0; i < n - 1; ++i) {
        d[i] = query(i + 1, i + 2);
    }
    res[0] = 0;
    res[1] = d[0];
    for (int i = 0; i < n - 2; ++i) {
        int v = query(i + 1, i + 3);
        if (v == d[i] + d[i + 1]) {
            if (res[i] < res[i + 1]) {
                res[i + 2] = res[i + 1] + d[i + 1];
            } else {
                res[i + 2] = res[i + 1] - d[i + 1];
            }
        } else {
            if (res[i] < res[i + 1]) {
                res[i + 2] = res[i + 1] - d[i + 1];
            } else {
                res[i + 2] = res[i + 1] + d[i + 1];
            }
        }
    }
    int ind1 = min_element(res.begin(), res.end()) - res.begin();
    int ind2 = max_element(res.begin(), res.end()) - res.begin();
    int v = res[ind1];
    for (int i = 0; i < n; ++i) {
        res[i] = res[i] - v + 1;
        if (ind2 < ind1) {
            res[i] = n + 1 - res[i];
        }
        ans(i + 1, res[i]);
    }
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(long long int)':
xylophone.cpp:18:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |         ans(1, 1);
      |         ^~~
      |         abs
xylophone.cpp:21:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   21 |         ans(1, 1);
      |         ^~~
      |         abs
xylophone.cpp:27:16: error: 'query' was not declared in this scope
   27 |         d[i] = query(i + 1, i + 2);
      |                ^~~~~
xylophone.cpp:32:17: error: 'query' was not declared in this scope
   32 |         int v = query(i + 1, i + 3);
      |                 ^~~~~
xylophone.cpp:55:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   55 |         ans(i + 1, res[i]);
      |         ^~~
      |         abs