이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <iostream>
#include <algorithm>
#include <queue>
#include <vector>
#include <set>
using namespace std;
#define ll long long
#define fff(i, a, b) for(int i = a; i < b; i++)
#define fffm(i, a, b) for(int i = a; i > b; i--)
#define ff(a, c) for(auto a: c)
#define x first
#define y second
#define MAXK 505
ll k, m;
pair<ll, ll> strt, nd;
vector<pair<ll, ll>> floors[MAXK];
ll dist(pair<ll, ll> p1, pair<ll, ll> p2){
if (m == 1) return abs(p1.x-p2.x) + abs(p1.y-p2.y);
return (abs(p1.x-p2.x) % (m+1)) + (abs(p1.y-p2.y) % (m+1)) + 2*(max(abs(p1.x-p2.x)/(m+1), (p1.x-p2.x) ? 1ll:0ll)) + 2*(max(abs(p1.y-p2.y)/(m+1), (p1.y-p2.y) ? 1ll:0ll));
}
priority_queue<pair<pair<ll, int>, pair<ll, ll>>> q;
set<pair<ll, ll>> seen[MAXK];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> k >> m;
cin >> strt.x >> strt.y >> nd.x >> nd.y;
fffm(i, k-1, 0){
ll ln; cin >> ln;
fff(j, 0, ln){
pair<ll, ll> a;
cin >> a.x >> a.y;
floors[i].push_back(a);
}
}
q.push({{0, k}, strt});
ll ans = INT64_MAX;
while(q.size()){
auto [a, pt] = q.top(); q.pop();
auto [dst, flr] = a;
if (seen[flr].find(pt) != seen[flr].end()){
continue;
}
seen[flr].insert(pt);
if (flr == 1){
ans = min(ans, -dst + dist(pt, nd));
}else{
ff(p2, floors[flr-1]){
ll d2 = dst - dist(pt, p2);
q.push({{d2, flr-1}, p2});
}
}
}
cout << ans << endl;
}
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