#include <bits/stdc++.h>
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
using namespace std;
struct E {
int to, w;
};
const int K = 505, H = 105, N = K * H,
C = 805, Z = 402, INF = 1e9, M = C * C * 3;
vector<pair<int, int>> holes[K];
vector<E> g[M], g2[N];
int d[M], s[K], d2[N], anc[M], dx[3] = {-1, 1, 0};
int m, k, sx, sy, ex, ey;
int getId(int x, int y, int z) {
return x * C * 3 + y * 3 + z;
}
void addEdge(int a, int b, int c) {
g[a].push_back({b, c});
g[b].push_back({a, c});
}
int calc(int x, int y) {
if (m == 1)
return abs(x) + abs(y);
int ans = INF;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
for (int g = 0; g < 2; g++) {
for (int h = 0; h < 2; h++) {
int p = abs(x + dx[i] * (m + 1)),
q = abs(y + dx[j] * (m + 1)),
t1 = p / (m + 1) + (i < 2),
t2 = q / (m + 1) + (j < 2),
cur = t1 * 2 + t2 * 2 + g * 2 + h * 2;
p %= (m + 1);
q %= (m + 1);
if (p) {
if (!t2)
cur += 2;
if (g)
cur += m + 1 - p;
else
cur += p;
}
if (q) {
if (!t1)
cur += 2;
if (h)
cur += m + 1 - q;
else
cur += q;
}
ans = min(ans, cur);
}
}
}
}
return ans;
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> k >> m >> sx >> sy >> ex >> ey;
// for (int x = 0; x < C; x++) {
// for (int y = 0; y < C; y++) {
// if (m == 1) {
// addEdge(getId(x, y, 0), getId(x, y, 1), 0);
// addEdge(getId(x, y, 1), getId(x, y, 2), 0);
// }
// if (x + 1 < C) {
// addEdge(getId(x, y, 0), getId(x + 1, y, 1), 1);
// addEdge(getId(x, y, 2), getId(x + 1, y, 2), 1);
// }
// if (y + 1 < C) {
// addEdge(getId(x, y, 0), getId(x, y + 1, 2), 1);
// addEdge(getId(x, y, 1), getId(x, y + 1, 1), 1);
// }
// if (x + m < C) {
// addEdge(getId(x, y, 1), getId(x + m, y, 0), 1);
// }
// if (y + m < C) {
// addEdge(getId(x, y, 2), getId(x, y + m, 0), 1);
// }
// }
// }
// fill(d, d + M, -1);
// fill(anc, anc + M, -1);
// int start = getId(Z, Z, 0);
// d[start] = 0;
// deque<int> q;
// q.push_back(start);
// while (!q.empty()) {
// int node = q.front();
// q.pop_front();
// for (E e : g[node]) {
// if (d[e.to] == -1) {
// d[e.to] = d[node] + e.w;
// anc[e.to] = node;
// if (e.w)
// q.push_back(e.to);
// else
// q.push_front(e.to);
// }
// }
// }
// cout << calc(0, 3);
// return 0;
// for (int i = 0; i <= 15; i++) {
// for (int j = 0; j <= 15; j++) {
// int cur = d[getId(Z + i, Z + j, 0)] ;
// if (cur < 10)
// cout << " ";
// cout << cur<< "/";
// int cur2 = calc(i, j);
// if (cur2 < 10)
// cout << " ";
// cout << cur2 << " ";
// if (cur != cur2) {
// cout <<"!";
// exit(1);
// }
// }
// cout << "\n";
// }
// pr(getId(2 + Z, 2 + Z, 0));
// return 0;
// cout << d[getId(Z + 1, Z + 1, 0)];
// return 0;
holes[k].push_back({sx, sy});
holes[0].push_back({ex, ey});
for (int i = k - 1; i > 0; i--) {
int h;
cin >> h;
while (h--) {
int x, y;
cin >> x >> y;
holes[i].push_back({x, y});
}
}
for (int i = 0; i < k; i++) {
s[i + 1] = s[i] + holes[i].size();
}
for (int i = 1; i <= k; i++) {
for (int x = 0; x < holes[i].size(); x++) {
for (int y = 0; y < holes[i - 1].size(); y++) {
int dist = calc(holes[i - 1][y].first - holes[i][x].first,
holes[i - 1][y].second - holes[i][x].second);
// cout << x + s[i] << " " << y + s[i - 1] << "\n";
g2[x + s[i]].push_back({y + s[i - 1], dist});
}
}
}
priority_queue<pair<int, int>,
vector<pair<int, int>>,
greater<pair<int, int>>> pq;
fill(d2, d2 + N, INF);
d2[s[k]] = 0;
pq.push({0, s[k]});
while (!pq.empty()) {
auto p = pq.top();
pq.pop();
if (p.first > d2[p.second])
continue;
int node = p.second;
for (E e : g2[node]) {
if (d2[e.to] > d2[node] + e.w) {
d2[e.to] = d2[node] + e.w;
pq.push({d2[e.to], e.to});
}
}
}
cout << d2[0] << "\n";
return 0;
}
Compilation message
obelisk.cpp: In function 'int main()':
obelisk.cpp:180:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int x = 0; x < holes[i].size(); x++) {
~~^~~~~~~~~~~~~~~~~
obelisk.cpp:181:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int y = 0; y < holes[i - 1].size(); y++) {
~~^~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
46 ms |
47480 KB |
Output is correct |
| 2 |
Correct |
45 ms |
47484 KB |
Output is correct |
| 3 |
Correct |
46 ms |
47480 KB |
Output is correct |
| 4 |
Correct |
45 ms |
47480 KB |
Output is correct |
| 5 |
Correct |
45 ms |
47480 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
49 ms |
47608 KB |
Output is correct |
| 2 |
Correct |
51 ms |
47736 KB |
Output is correct |
| 3 |
Correct |
51 ms |
47736 KB |
Output is correct |
| 4 |
Correct |
55 ms |
47992 KB |
Output is correct |
| 5 |
Correct |
47 ms |
47608 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
344 ms |
61328 KB |
Output is correct |
| 2 |
Correct |
366 ms |
62968 KB |
Output is correct |
| 3 |
Correct |
365 ms |
62348 KB |
Output is correct |
| 4 |
Correct |
375 ms |
62772 KB |
Output is correct |
| 5 |
Correct |
386 ms |
63352 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
389 ms |
62336 KB |
Output is correct |
| 2 |
Correct |
375 ms |
61560 KB |
Output is correct |
| 3 |
Correct |
359 ms |
61944 KB |
Output is correct |
| 4 |
Correct |
395 ms |
63512 KB |
Output is correct |
| 5 |
Correct |
389 ms |
62456 KB |
Output is correct |
