Submission #1325787

#	Time	Username	Problem	Language	Result	Execution time	Memory
1325787		sonarcht	Secret (JOI14_secret)	C++20	Compilation error	0 ms	0 KiB

secret

#include<bits/stdc++.h>
#include "secret.h"
using namespace std;
#define ll long long
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(v) begin(v), end(v)
#define pll pair<ll, ll>
#define fi first
#define se second
#define vll vector<ll>
#define mll map<ll, ll>
mt19937_64 rng(chrono::high_resolution_clock().now().time_since_epoch().count());
const ll N = 1e5 + 6, inf = 1e18 + 7, mod = 1e9 + 7;
ll n, m, k, q, ans, a[N], dat[N][21], mask[N];

void dnc(ll l, ll r, ll dep, ll a[]) {
	if (l == r) {
		dat[l][dep] = a[l];
		return;
	}
	ll m = (l+r) / 2;
	dat[m][dep] = a[m], dat[m+1][dep] = a[m+1];
	for (int i = m-1; i >= l; --i) dat[i][dep] = Secret(a[i], dat[i+1][dep]);
	for (int i = m+2; i <= r; ++i) dat[i][dep] = Secret(dat[i-1][dep], a[i]);
	for (int i = m+1; i <= r; ++i) mask[i] ^= (1 << dep);
	dnc(l, mid, dep+1, a);
	dnc(mid+1, r, dep+1, a);
}

void Init(ll N, ll A[]) {
	n = N;
	dnc(0, n-1, 0, A);
}

ll Query(ll L, ll R) {
	ll dep = __builtin_ctz(mask[l] ^ mask[r]);
	return Secret(dat[l][dep], dat[r][dep]);
}

Compilation message (stderr)

secret.cpp: In function 'void dnc(long long int, long long int, long long int, long long int*)':
secret.cpp:28:16: error: 'mid' was not declared in this scope; did you mean 'mod'?
   28 |         dnc(l, mid, dep+1, a);
      |                ^~~
      |                mod
secret.cpp: In function 'long long int Query(long long int, long long int)':
secret.cpp:38:37: error: 'l' was not declared in this scope
   38 |         ll dep = __builtin_ctz(mask[l] ^ mask[r]);
      |                                     ^
secret.cpp:38:47: error: 'r' was not declared in this scope
   38 |         ll dep = __builtin_ctz(mask[l] ^ mask[r]);
      |                                               ^