#include <bits/stdc++.h>
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define all(v) v.begin(),v.end()
#define pb push_back
#define sz size()
#define ft first
#define sd second
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef unsigned long long ull;
const int N = 1e6 + 5;
const ll M = 1e8;
const ll inf = 1e18;
const ll mod = 1e9;
const double Pi = acos(-1);
ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res *= x;x *= x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); }
bool odd(ll n) { return (n % 2 == 1); }
bool even(ll n) { return (n % 2 == 0); }
ll n, x[N], y[N], cnt[N][3], ans;
vector <pll> v;
bool pr[N][3];
const void solve(/*Armashka*/) {
cin >> n;
//cout << "\n";
for (int i = 1; i <= 2 * n; ++ i) {
cin >> x[i] >> y[i];
if (y[i] > 2) ans += abs(y[i] - 2), y[i] = 2;
if (y[i] < 1) ans += abs(y[i] - 1), y[i] = 1;
if (x[i] > n) ans += abs(x[i] - n), x[i] = n;
if (x[i] < 1) ans += abs(x[i] - 1), x[i] = 1;
++ cnt[x[i]][y[i]];
//cout << x[i] << " " << y[i] << "\n";
v.pb({y[i], x[i]});
}
for (int i = 1; i <= n; ++ i) {
for (int j = 1; j <= 2; ++ j) {
pr[i][j] = pr[i - 1][j];
if (cnt[i][j] > 1) pr[i][j] = 1;
}
}
sort(all(v));
//cout << ans << "\n";
for (int k = 0; k < 2 * n; ++ k) {
ll x = v[k].sd, y = v[k].ft;
for (int i = 1; i <= n; ++ i) {
if (cnt[i][y]) continue;
if (cnt[x][y] == 1) break;
++ cnt[i][y];
-- cnt[x][y];
ans += abs(x - i);
if (cnt[x][y] == 1) break;
ll y2 = 1;
if (y == 1) y2 = 2;
if (!pr[i][y2]) {
++ cnt[i][y2];
-- cnt[x][y];
ans += abs(x - i) + 1;
}
}
ll y2 = 1;
if (y == 1) y2 = 2;
for (int i = 1; i <= n; ++ i) {
if (cnt[i][y2]) continue;
if (cnt[x][y] == 1) break;
++ cnt[i][y2];
-- cnt[x][y];
ans += abs(x - i) + 1;
}
}
cout << ans << "\n";
}
signed main() {
fast;
//freopen("divide.in", "r", stdin);
//freopen("divide.out", "w", stdout);
int tt = 1;
//cin >> tt;
while (tt --) {
solve();
}
}
/*
5 4 4
1 2
3 1
3 4
5 3
4 5 2 3
2 1 3 1
1 3 5
2 3 4 5
2 1 3 1
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
0 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
332 KB |
Output is correct |
| 6 |
Correct |
0 ms |
332 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 8 |
Halted |
0 ms |
0 KB |
- |
