| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1263945 | wedonttalkanymore | Secret (JOI14_secret) | C++20 | 0 ms | 0 KiB |
//#include "secret.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
//#define int long long
#define pii pair<ll, ll>
#define fi first
#define se second
const ll MAXN = 1e3 + 5, inf = 1e9, mod = 1e9 + 7, block = 320, lim = 16;
int a[MAXN];
int n;
int dp[MAXN][MAXN];
#define MAX_N 1000
#define MAX_Q 10000
#define MAX_VALUE 1000000000
static int N;
static int A[MAX_N];
static int Q;
static int L[MAX_Q];
static int R[MAX_Q];
static int secret_count;
int Secret(int X, int Y) {
++secret_count;
if (!(0 <= X && X <= MAX_VALUE)) {
fprintf(stderr, "Wrong Answer [1]\n");
exit(0);
}
if (!(0 <= Y && Y <= MAX_VALUE)) {
fprintf(stderr, "Wrong Answer [1]\n");
exit(0);
}
return (X + 2 * (Y / 2) < MAX_VALUE) ? (X + 2 * (Y / 2)) : MAX_VALUE;
}
void dnc(int l, int r) {
if (l > r) return;
if (l == r) {
dp[l][l] = a[l];
return;
}
int mid = (l + r) / 2;
dp[mid][mid] = a[mid];
dp[mid + 1][mid + 1] = a[mid + 1];
for (int i = mid + 2; i <= r; i++) dp[mid + 1][i] = Secret(dp[mid + 1][i - 1], a[i]);
for (int i = mid - 1; i >= l; i--) dp[i][mid] = Secret(dp[i + 1][mid], a[i]);
dnc(l, mid);
dnc(mid + 1, r);
}
void Init(int N, int A[]) {
n = N;
for (int i = 1; i <= n; i++) a[i] = A[i - 1];
dnc(1, n);
}
int make(int l, int r, int &L, int &R) {
// if (l == r) return 0;
int mid = (l + r) / 2;
if (L <= mid && mid <= R) {
if (L < mid) return Secret(dp[L][mid - 1], dp[mid][R]);
else return dp[L][R];
}
if (R <= mid) return make(l, mid, L, R);
else return make(mid + 1, r, L, R);
}
int Query(int L, int R) {
return make(1, n, L, R);
return 0;
}
//int main() {
// int i, j;
// int secret_count_by_init;
// int max_secret_count_by_query = 0;
//
// if (1 != scanf("%d", &N)) {
// fprintf(stderr, "error: cannot read N.\n");
// exit(1);
// }
// if (!(1 <= N && N <= MAX_N)) {
// fprintf(stderr, "error: N is out of bounds.\n");
// exit(1);
// }
// for (i = 0; i < N; ++i) {
// if (1 != scanf("%d", &A[i])) {
// fprintf(stderr, "error: cannot read A[%d].\n", i);
// exit(1);
// }
// if (!(0 <= A[i] && A[i] <= MAX_VALUE)) {
// fprintf(stderr, "error: A[%d] is out of bounds.\n", i);
// exit(1);
// }
// }
// if (1 != scanf("%d", &Q)) {
// fprintf(stderr, "error: cannot read Q.\n");
// exit(1);
// }
// if (!(0 <= Q && Q <= MAX_Q)) {
// fprintf(stderr, "error: Q is out of bounds.\n");
// exit(1);
// }
// for (j = 0; j < Q; ++j) {
// if (2 != scanf("%d%d", &L[j], &R[j])) {
// fprintf(stderr, "error: cannot read L[%d] and R[%d].\n", j, j);
// exit(1);
// }
// if (!(0 <= L[j] && L[j] <= R[j] && R[j] <= N - 1)) {
// fprintf(stderr,
// "error: L[%d] and R[%d] do not satisfy the constraints.\n",
// j, j);
// exit(1);
// }
// }
//
// secret_count = 0;
// Init(N, A);
// secret_count_by_init = secret_count;
//
// for (j = 0; j < Q; ++j) {
// secret_count = 0;
// printf("%d\n", Query(L[j], R[j]));
// if (max_secret_count_by_query < secret_count) {
// max_secret_count_by_query = secret_count;
// }
// }
//
// fprintf(stderr, "number of calls to Secret by Init : %d\n",
// secret_count_by_init);
// fprintf(stderr, "maximum number of calls to Secret by Query : %d\n",
// max_secret_count_by_query);
//
// return 0;
//}