Submission #1144898

#	Time	Username	Problem	Language	Result	Execution time	Memory
1144898		mingga	Secret (JOI14_secret)	C++20	Compilation error	0 ms	0 KiB

secret

#include "bits/stdc++.h"
// #include "secret.h"

using namespace std;

#define ln "\n"
#define pb push_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
// #define int long long
const int mod = 1e9 + 7;
// const int inf = 2e18;
const int N = 1005;
int n, a[N], f[N][N], b[N];

// int Secret(int x, int y) {
// 	assert(x != -1 and y != -1);
// 	int ans = 0;
// 	return x + y;
// }

void calc(int l, int r) {
	if(l >= r) return;
	int m = (l + r) >> 1;
	calc(l, m); calc(m + 1, r);
	f[m][m] = a[m];
	for(int i = m - 1; i >= l; i--) f[i][m] = Secret(f[i + 1][m], a[i]);
	f[m + 1][m + 1] = a[m + 1];
	for(int i = m + 2; i <= r; i++) f[m + 1][i] = Secret(f[m + 1][i - 1], a[i]);
}

void Init(int len, int arr[]) {
	n = len;
	for(int i = 1; i <= n; i++) a[i] = arr[i - 1];
	for(int i = 1; i <= n; i++) {
		for(int j = i + 1; j <= n; j++) {
			f[i][j] = f[j][i] = -1;
		}
	}
	calc(1, n);
}

int Query(int l, int r) {
	l++, r++;
	if(l == r) return a[l];
	for(int i = l; i <= r; i++) {
		if(f[l][i] == -1 and f[i][r] != -1) {
			return Secret(f[l][i - 1], f[i][r]);
		}
	}
}

//Testing
// signed main() {
// 	int n; cin >> n;
// 	for(int i = 0; i < n; i++) {
// 		cin >> b[i];
// 	}
// 	Init(n, b);
// 	int q; cin >> q;
// 	for(int i = 1; i <= q; i++) {
// 		int l, r; cin >> l >> r;
// 		int ans = 0;
// 		for(int i = l; i <= r; i++) ans += b[i];
// 		assert(Query(l, r) == ans);
// 		cout << Query(l, r) << ln;
// 	}
// }

Compilation message (stderr)

secret.cpp: In function 'void calc(int, int)':
secret.cpp:29:51: error: 'Secret' was not declared in this scope
   29 |         for(int i = m - 1; i >= l; i--) f[i][m] = Secret(f[i + 1][m], a[i]);
      |                                                   ^~~~~~
secret.cpp:31:55: error: 'Secret' was not declared in this scope
   31 |         for(int i = m + 2; i <= r; i++) f[m + 1][i] = Secret(f[m + 1][i - 1], a[i]);
      |                                                       ^~~~~~
secret.cpp: In function 'int Query(int, int)':
secret.cpp:50:32: error: 'Secret' was not declared in this scope
   50 |                         return Secret(f[l][i - 1], f[i][r]);
      |                                ^~~~~~