/// In The Name Of God
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
//#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define pp pop_back
#define mp make_pair
#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()
#define rep(i, l, r) for (int i = (l); i <= (r); i++)
#define per(i, l, r) for (int i = (l); i >= (r); i--)
#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define nl '\n'
#define ioi exit(0);
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
const int N = (int)2e5 + 7;
const int inf = (int)1e9 + 7;
const int mod = (int)1e9 + 7;
const ll linf = (ll)1e18 + 7;
const int dx[] = {-1, 0, 1, 0, 1, -1, -1, 1};
const int dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
using namespace std;
int n;
pair <ll, ll> a[N];
bool was[N];
int take(ll x, ll y) {
ll mn = linf;
int ans = 0;
ll ox, oy;
rep(i, 1, n << 1) {
if (!was[i]) {
ll dist = abs(x - a[i].f) + abs(y - a[i].s);
if (mn > dist) {
mn = dist;
ans = i;
ox = a[i].f, oy = a[i].s;
}
else if (mn == dist) {
if (a[i].f < ox || (a[i].f == ox && (a[i].s < oy))) {
ox = a[i].f, oy = a[i].s;
ans = i;
}
}
}
}
return ans;
}
bool check(int x, int y) {
return 1 <= x && x <= n && 1 <= y && y <= 2;
}
int main() {
#ifdef IOI
freopen ("in.txt", "r", stdin);
#endif
Kazakhstan
cin >> n;
rep(i, 1, n << 1) {
cin >> a[i].f >> a[i].s;
}
map < pair <int, int>, int> placed;
rep(i, 1, n << 1) {
if (check(a[i].f, a[i].s)) {
if (placed.count(a[i])) continue;
placed[a[i]] = 1;
was[i] = 1;
}
}
ll ans = 0;
rep(j, 1, 2) {
rep(i, 1, n) {
if (placed.count({i, j})) continue;
int id = take(i, j);
was[id] = 1;
ans += abs(i - a[id].f) + abs(j - a[id].s);
//cerr << i << ' ' << j << ' ' << id << endl;
}
}
cout << ans;
ioi
}
Compilation message
joi2019_ho_t4.cpp: In function 'int take(ll, ll)':
joi2019_ho_t4.cpp:61:42: warning: 'oy' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (a[i].f < ox || (a[i].f == ox && (a[i].s < oy))) {
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:61:25: warning: 'ox' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (a[i].f < ox || (a[i].f == ox && (a[i].s < oy))) {
~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 7 |
Halted |
0 ms |
0 KB |
- |
