| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1315236 | otarius | 동굴 (IOI13_cave) | C++20 | 0 ms | 0 KiB |
// #include "cave.h"
#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rngl(chrono::steady_clock::now().time_since_epoch().count());
// #define int long long
// #define int unsigned long long
// #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>
// #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>
// const ll mod = 1e9 + 7;
// const ll mod = 998244353;
const ll inf = 1e9;
const ll biginf = 1e18;
// const int maxN;
#define MAX_N 5000
#define MAX_CALLS 70000
#define fail(s, x...) do { \
fprintf(stderr, s "\n", ## x); \
exit(1); \
} while(0)
/* Symbol obfuscation */
#define N koala
#define realS kangaroo
#define realD possum
#define inv platypus
#define num_calls echidna
static int N;
static int realS[MAX_N];
static int realD[MAX_N];
static int inv[MAX_N];
static int num_calls;
void answer(int S[], int D[]) {
int i;
int correct = 1;
for (i = 0; i < N; ++i)
if (S[i] != realS[i] || D[i] != realD[i]) {
correct = 0;
break;
}
if (correct)
printf("CORRECT\n");
else
printf("INCORRECT\n");
for (i = 0; i < N; ++i) {
if (i > 0)
printf(" ");
printf("%d", S[i]);
}
printf("\n");
for (i = 0; i < N; ++i) {
if (i > 0)
printf(" ");
printf("%d", D[i]);
}
printf("\n");
exit(0);
}
int tryCombination(int S[]) {
int i;
if (num_calls >= MAX_CALLS) {
printf("INCORRECT\nToo many calls to tryCombination().\n");
exit(0);
}
++num_calls;
for (i = 0; i < N; ++i)
if (S[inv[i]] != realS[inv[i]])
return i;
return -1;
}
int init() {
int i, res;
cin >> N;
// res = fscanf(f, "%d", &N);
for (i = 0; i < N; ++i) {
cin >> realS[i];
// res = fscanf(f, "%d", &realS[i]);
}
for (i = 0; i < N; ++i) {
cin >> realD[i];
// res = fscanf(f, "%d", &realD[i]);
inv[realD[i]] = i;
}
num_calls = 0;
return N;
}
void exploreCave(int n) {
int s[n], d[n], q[n]{};
for (int i = 0; i < n; i++) {
for (int j = 0; j < i; j++) q[j] = s[j];
for (int j = i; j < n; j++) q[j] = 0;
int now = tryCombination(q);
if (now > i || now == -1) s[i] = 0;
else s[i] = 1;
}
bool used[n]{};
for (int i = 0; i < n; i++) {
vector<int> cur;
for (int j = 0; j < n; j++) {
if (used[j]) q[j] = s[j];
else cur.pb(j);
}
int l = 0, r = (int)cur.size() - 1, m, ans;
while (l <= r) {
m = (l + r) / 2;
for (int j = 0; j <= m; j++) q[cur[j]] = s[cur[j]];
for (int j = m + 1; j < cur.size(); j++) q[cur[j]] = !s[cur[j]];
int now = tryCombination(q);
if (now > i || now == -1) {
ans = m; r = m - 1;
} else l = m + 1;
}
d[cur[ans]] = i; used[cur[ans]] = 1;
}
answer(s, d);
}
int main() {
int N;
N = init();
exploreCave(N);
printf("INCORRECT\nYour solution did not call answer().\n");
return 0;
}