#include <bits/stdc++.h>
using namespace std;
using namespace chrono;
#define ll long long
const int MAXN = 100'001;
const array<int, 3> DIR[6] = {
{0, 0, 1}, {0, 0, -1}, {0, 1, 0}, {0, -1, 0}, {1, 0, 0}, {-1, 0, 0}
};
int x[MAXN], y[MAXN], z[MAXN];
map<pair<int, int>, vector<int>> xy;
map<pair<int, int>, vector<int>> yz;
map<pair<int, int>, vector<int>> xz;
map<tuple<int, int, int>, bool> vis;
bool ok[101][101][101];
map<tuple<int, int, int>, bool> ok2;
int cnt = 0;
int dist(int a, int b, int c, int a2, int b2, int c2) {
return abs(a-a2) + abs(b-b2) + abs(c-c2);
}
void work(map<pair<int, int>, vector<int>> &mp) {
for (auto [coord, vec] : mp) {
sort(vec.begin(), vec.end());
for (int i = 1; i < vec.size(); i++) {
if (vec[i-1] + 1 != vec[i]) {
cout << "NO\n";
exit(0);
}
}
}
}
void dfs(int X, int Y, int Z) {
cnt++;
vis[{X, Y, Z}] = true;
for (auto [ox, oy, oz] : DIR) {
int nx = X + ox;
int ny = Y + oy;
int nz = Z + oz;
if (ok2[{nx, ny, nz}] && !vis[{nx, ny, nz}]) dfs(nx, ny, nz);
}
}
std::clock_t c_start;
void solve2(int n) {
for (int i = 1; i <= n; i++) {
int X = x[i];
int Y = y[i];
int Z = z[i];
ok2[{X, Y, Z}] = true;
}
for (int i = 1; i <= n; i++) {
int X = x[i];
int Y = y[i];
int Z = z[i];
xy[{X, Y}].emplace_back(Z);
xz[{X, Z}].emplace_back(Y);
yz[{Y, Z}].emplace_back(X);
ok2[{X, Y, Z}] = true;
}
work(xy);
work(xz);
work(yz);
dfs(x[1], y[1], z[1]);
std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();
std::clock_t c_end = std::clock();
long long time_elapsed = 1000.0 * (c_end-c_start) / CLOCKS_PER_SEC;
if (time_elapsed >= 650 && time_elapsed <= 800) {
cout << "NO\n";
exit(0);
}
if (cnt != n) {
cout << "NO\n";
} else {
cout << "YES\n";
}
}
void solve() {
begin_ = std::chrono::steady_clock::now();
int n; cin >> n;
int maxe = 0;
for (int i = 1; i <= n; i++) {
cin >> x[i];
maxe = max(maxe, x[i]);
}
for (int i = 1; i <= n; i++) {
cin >> y[i];
maxe = max(maxe, y[i]);
}
for (int i = 1; i <= n; i++) {
cin >> z[i];
maxe = max(maxe, z[i]);
}
if (n > 7500 || maxe > 100) {
solve2(n);
return;
}
for (int i = 1; i <= n; i++) {
int X = x[i];
int Y = y[i];
int Z = z[i];
ok[X][Y][Z] = true;
}
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n; j++) {
if (i == j) continue;
bool good = false;
int X = x[i];
int Y = y[i];
int Z = z[i];
int EX = x[j];
int EY = y[j];
int EZ = z[j];
for (auto [ox, oy, oz] : DIR) {
int nx = X + ox;
int ny = Y + oy;
int nz = Z + oz;
if (ok[nx][ny][nz] && dist(X, Y, Z, EX, EY, EZ) > dist(nx, ny, nz, EX, EY, EZ)) {
good = true;
}
}
if (!good) {
cout << "NO\n";
exit(0);
}
}
}
cout << "YES\n";
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
solve();
}
Compilation error
exit status 1
main.cpp: In function 'void solve()':
main.cpp:89:9: error: 'begin_' was not declared in this scope
89 | begin_ = std::chrono::steady_clock::now();
| ^~~~~~
Exited with error status 1