#include <iostream>
#include <queue>
#include <vector>
#include <map>
#include <functional>
#include <algorithm>
#include <cmath>
using namespace std;
int N, M, A[30009], P[30009], dist[7400009], sz; pair<int, int>vec[2400009];
vector<pair<int, int>>X[2400009]; vector<int> G[30009];
map<pair<int, int>, int>M1; priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>Q;
void connect(int px, int py, int qx, int qy, int cost) {
int pos1 = lower_bound(vec, vec + sz, make_pair(px, py)) - vec;
int pos2 = lower_bound(vec, vec + sz, make_pair(qx, qy)) - vec;
X[pos1].push_back(make_pair(pos2, cost));
}
int main() {
cin >> N >> M;
for (int i = 1; i <= M; i++) {
cin >> A[i] >> P[i]; G[A[i]].push_back(P[i]);
if (M1[make_pair(A[i] % P[i], P[i])] == 0) {
M1[make_pair(A[i] % P[i], P[i])] = 1;
for (int j = A[i] % P[i]; j < N; j += P[i]) { vec[sz] = make_pair(j, P[i]); sz++; }
}
}
for (int i = 0; i < N; i++) { vec[sz] = make_pair(i, 0); sz++; }
sort(vec, vec + sz);
for (int i = 0; i < sz; i++) {
int pos = vec[i].first, state = vec[i].second;
if (state == 0) {
for (int j = 0; j < G[pos].size(); j++) connect(pos, 0, pos, G[pos][j], 0);
}
else {
connect(pos, state, pos, 0, 0);
if (pos - state >= 0) connect(pos, state, pos - state, state, 1);
if (pos + state < N) connect(pos, state, pos + state, state, 1);
}
}
for (int i = 0; i < sz; i++) dist[i] = (1 << 30);
int sx = lower_bound(vec, vec + sz, make_pair(A[1], 0)) - vec;
int gx = lower_bound(vec, vec + sz, make_pair(A[2], 0)) - vec;
dist[sx] = 0; Q.push(make_pair(dist[sx], sx));
while (!Q.empty()) {
int pos = Q.top().second; Q.pop();
for (int i = 0; i < X[pos].size(); i++) {
int to = X[pos][i].first, cost = X[pos][i].second;
if (dist[to] > dist[pos] + cost) {
dist[to] = dist[pos] + cost;
Q.push(make_pair(dist[to], to));
}
}
}
int ans = dist[gx]; if (ans == (1 << 30)) ans = -1;
cout << ans << endl;
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:36:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int j = 0; j < G[pos].size(); j++) connect(pos, 0, pos, G[pos][j], 0);
~~^~~~~~~~~~~~~~~
skyscraper.cpp:52:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < X[pos].size(); i++) {
~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
47 ms |
57468 KB |
Output is correct |
| 2 |
Correct |
46 ms |
57576 KB |
Output is correct |
| 3 |
Correct |
47 ms |
57576 KB |
Output is correct |
| 4 |
Correct |
47 ms |
57576 KB |
Output is correct |
| 5 |
Correct |
46 ms |
57576 KB |
Output is correct |
| 6 |
Correct |
47 ms |
57600 KB |
Output is correct |
| 7 |
Correct |
47 ms |
57600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
50 ms |
57608 KB |
Output is correct |
| 2 |
Correct |
48 ms |
57608 KB |
Output is correct |
| 3 |
Correct |
47 ms |
57624 KB |
Output is correct |
| 4 |
Correct |
49 ms |
57672 KB |
Output is correct |
| 5 |
Correct |
48 ms |
57672 KB |
Output is correct |
| 6 |
Correct |
48 ms |
57672 KB |
Output is correct |
| 7 |
Correct |
47 ms |
57672 KB |
Output is correct |
| 8 |
Correct |
50 ms |
57676 KB |
Output is correct |
| 9 |
Correct |
47 ms |
57676 KB |
Output is correct |
| 10 |
Correct |
48 ms |
57784 KB |
Output is correct |
| 11 |
Correct |
56 ms |
58008 KB |
Output is correct |
| 12 |
Correct |
47 ms |
58008 KB |
Output is correct |
| 13 |
Correct |
49 ms |
58008 KB |
Output is correct |
| 14 |
Correct |
54 ms |
58092 KB |
Output is correct |
| 15 |
Correct |
53 ms |
58220 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
47 ms |
58220 KB |
Output is correct |
| 2 |
Correct |
49 ms |
58220 KB |
Output is correct |
| 3 |
Correct |
46 ms |
58220 KB |
Output is correct |
| 4 |
Correct |
47 ms |
58220 KB |
Output is correct |
| 5 |
Correct |
48 ms |
58220 KB |
Output is correct |
| 6 |
Correct |
50 ms |
58220 KB |
Output is correct |
| 7 |
Correct |
46 ms |
58220 KB |
Output is correct |
| 8 |
Correct |
47 ms |
58220 KB |
Output is correct |
| 9 |
Correct |
47 ms |
58220 KB |
Output is correct |
| 10 |
Correct |
51 ms |
58220 KB |
Output is correct |
| 11 |
Correct |
57 ms |
58220 KB |
Output is correct |
| 12 |
Correct |
48 ms |
58220 KB |
Output is correct |
| 13 |
Correct |
48 ms |
58220 KB |
Output is correct |
| 14 |
Correct |
54 ms |
58220 KB |
Output is correct |
| 15 |
Correct |
62 ms |
58220 KB |
Output is correct |
| 16 |
Correct |
54 ms |
58220 KB |
Output is correct |
| 17 |
Correct |
62 ms |
58620 KB |
Output is correct |
| 18 |
Correct |
53 ms |
58620 KB |
Output is correct |
| 19 |
Correct |
64 ms |
58620 KB |
Output is correct |
| 20 |
Correct |
51 ms |
58620 KB |
Output is correct |
| 21 |
Correct |
49 ms |
58620 KB |
Output is correct |
| 22 |
Correct |
52 ms |
58620 KB |
Output is correct |
| 23 |
Correct |
59 ms |
58620 KB |
Output is correct |
| 24 |
Correct |
62 ms |
58620 KB |
Output is correct |
| 25 |
Correct |
56 ms |
58620 KB |
Output is correct |
| 26 |
Correct |
55 ms |
58620 KB |
Output is correct |
| 27 |
Correct |
57 ms |
58620 KB |
Output is correct |
| 28 |
Correct |
68 ms |
59260 KB |
Output is correct |
| 29 |
Correct |
101 ms |
61308 KB |
Output is correct |
| 30 |
Correct |
63 ms |
61308 KB |
Output is correct |
| 31 |
Correct |
76 ms |
61308 KB |
Output is correct |
| 32 |
Correct |
68 ms |
61308 KB |
Output is correct |
| 33 |
Correct |
167 ms |
64864 KB |
Output is correct |
| 34 |
Correct |
163 ms |
64892 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
47 ms |
64892 KB |
Output is correct |
| 2 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 3 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 4 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 5 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 6 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 7 |
Correct |
48 ms |
64892 KB |
Output is correct |
| 8 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 9 |
Correct |
50 ms |
64892 KB |
Output is correct |
| 10 |
Correct |
50 ms |
64892 KB |
Output is correct |
| 11 |
Correct |
54 ms |
64892 KB |
Output is correct |
| 12 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 13 |
Correct |
49 ms |
64892 KB |
Output is correct |
| 14 |
Correct |
55 ms |
64892 KB |
Output is correct |
| 15 |
Correct |
55 ms |
64892 KB |
Output is correct |
| 16 |
Correct |
52 ms |
64892 KB |
Output is correct |
| 17 |
Correct |
63 ms |
64892 KB |
Output is correct |
| 18 |
Correct |
55 ms |
64892 KB |
Output is correct |
| 19 |
Correct |
53 ms |
64892 KB |
Output is correct |
| 20 |
Correct |
51 ms |
64892 KB |
Output is correct |
| 21 |
Correct |
52 ms |
64892 KB |
Output is correct |
| 22 |
Correct |
54 ms |
64892 KB |
Output is correct |
| 23 |
Correct |
56 ms |
64892 KB |
Output is correct |
| 24 |
Correct |
62 ms |
64892 KB |
Output is correct |
| 25 |
Correct |
58 ms |
64892 KB |
Output is correct |
| 26 |
Correct |
56 ms |
64892 KB |
Output is correct |
| 27 |
Correct |
56 ms |
64892 KB |
Output is correct |
| 28 |
Correct |
68 ms |
64892 KB |
Output is correct |
| 29 |
Correct |
102 ms |
64892 KB |
Output is correct |
| 30 |
Correct |
63 ms |
64892 KB |
Output is correct |
| 31 |
Correct |
78 ms |
64892 KB |
Output is correct |
| 32 |
Correct |
67 ms |
64892 KB |
Output is correct |
| 33 |
Correct |
161 ms |
64892 KB |
Output is correct |
| 34 |
Correct |
161 ms |
64904 KB |
Output is correct |
| 35 |
Correct |
178 ms |
65532 KB |
Output is correct |
| 36 |
Correct |
68 ms |
65532 KB |
Output is correct |
| 37 |
Correct |
266 ms |
69320 KB |
Output is correct |
| 38 |
Correct |
256 ms |
69372 KB |
Output is correct |
| 39 |
Correct |
254 ms |
69372 KB |
Output is correct |
| 40 |
Correct |
273 ms |
69536 KB |
Output is correct |
| 41 |
Correct |
262 ms |
69536 KB |
Output is correct |
| 42 |
Correct |
73 ms |
69536 KB |
Output is correct |
| 43 |
Correct |
72 ms |
69536 KB |
Output is correct |
| 44 |
Correct |
68 ms |
69536 KB |
Output is correct |
| 45 |
Correct |
593 ms |
88112 KB |
Output is correct |
| 46 |
Correct |
630 ms |
88112 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
48 ms |
88112 KB |
Output is correct |
| 2 |
Correct |
50 ms |
88112 KB |
Output is correct |
| 3 |
Correct |
47 ms |
88112 KB |
Output is correct |
| 4 |
Correct |
49 ms |
88112 KB |
Output is correct |
| 5 |
Correct |
48 ms |
88112 KB |
Output is correct |
| 6 |
Correct |
47 ms |
88112 KB |
Output is correct |
| 7 |
Correct |
47 ms |
88112 KB |
Output is correct |
| 8 |
Correct |
50 ms |
88112 KB |
Output is correct |
| 9 |
Correct |
49 ms |
88112 KB |
Output is correct |
| 10 |
Correct |
50 ms |
88112 KB |
Output is correct |
| 11 |
Correct |
52 ms |
88112 KB |
Output is correct |
| 12 |
Correct |
49 ms |
88112 KB |
Output is correct |
| 13 |
Correct |
48 ms |
88112 KB |
Output is correct |
| 14 |
Correct |
55 ms |
88112 KB |
Output is correct |
| 15 |
Correct |
56 ms |
88112 KB |
Output is correct |
| 16 |
Correct |
52 ms |
88112 KB |
Output is correct |
| 17 |
Correct |
62 ms |
88112 KB |
Output is correct |
| 18 |
Correct |
58 ms |
88112 KB |
Output is correct |
| 19 |
Correct |
54 ms |
88112 KB |
Output is correct |
| 20 |
Correct |
52 ms |
88112 KB |
Output is correct |
| 21 |
Correct |
50 ms |
88112 KB |
Output is correct |
| 22 |
Correct |
52 ms |
88112 KB |
Output is correct |
| 23 |
Correct |
55 ms |
88112 KB |
Output is correct |
| 24 |
Correct |
62 ms |
88112 KB |
Output is correct |
| 25 |
Correct |
58 ms |
88112 KB |
Output is correct |
| 26 |
Correct |
56 ms |
88112 KB |
Output is correct |
| 27 |
Correct |
55 ms |
88112 KB |
Output is correct |
| 28 |
Correct |
69 ms |
88112 KB |
Output is correct |
| 29 |
Correct |
105 ms |
88112 KB |
Output is correct |
| 30 |
Correct |
63 ms |
88112 KB |
Output is correct |
| 31 |
Correct |
80 ms |
88112 KB |
Output is correct |
| 32 |
Correct |
68 ms |
88112 KB |
Output is correct |
| 33 |
Correct |
166 ms |
88112 KB |
Output is correct |
| 34 |
Correct |
162 ms |
88112 KB |
Output is correct |
| 35 |
Correct |
177 ms |
88112 KB |
Output is correct |
| 36 |
Correct |
70 ms |
88112 KB |
Output is correct |
| 37 |
Correct |
274 ms |
88112 KB |
Output is correct |
| 38 |
Correct |
260 ms |
88112 KB |
Output is correct |
| 39 |
Correct |
257 ms |
88112 KB |
Output is correct |
| 40 |
Correct |
262 ms |
88112 KB |
Output is correct |
| 41 |
Correct |
260 ms |
88112 KB |
Output is correct |
| 42 |
Correct |
78 ms |
88112 KB |
Output is correct |
| 43 |
Correct |
71 ms |
88112 KB |
Output is correct |
| 44 |
Correct |
66 ms |
88112 KB |
Output is correct |
| 45 |
Correct |
590 ms |
88188 KB |
Output is correct |
| 46 |
Correct |
585 ms |
88188 KB |
Output is correct |
| 47 |
Execution timed out |
1031 ms |
103480 KB |
Time limit exceeded |
| 48 |
Halted |
0 ms |
0 KB |
- |
