//I wrote this code 4 u <3
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#ifdef LOCAL
#include "algo/debug.h"
#else
#define debug(...) 42
#endif
const int INF = (int) 1e9 + 1e3;
signed main(int32_t argc, char *argv[]) {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> m >> n;
vector<pair<int, int>> a(n);
vector<vector<int>> g(m);
for (int i = 0; i < n; ++i) {
cin >> a[i].first >> a[i].second;
g[a[i].first].push_back(a[i].second);
}
vector<int> dist(m, INF);
set<pair<int, int>> st;
st.insert({0, a[0].first});
dist[a[0].first] = 0;
while (!st.empty()) {
auto [t, v] = *st.begin();
st.erase(st.begin());
for (auto jmp : g[v]) {
int d = 0, cur = v;
while (cur < m) {
if (dist[cur] > dist[v] + d) {
st.erase({dist[cur], cur});
dist[cur] = dist[v] + d;
st.insert({dist[cur], cur});
}
cur += jmp;
d++;
}
cur = v;
d = 0;
while (cur > -1) {
if (dist[cur] > dist[v] + d) {
st.erase({dist[cur], cur});
dist[cur] = dist[v] + d;
st.insert({dist[cur], cur});
}
cur -= jmp;
d++;
}
}
}
cout << (dist[a[1].first] == INF ? -1 : dist[a[1].first]);
}
/*
*/
Compilation message
skyscraper.cpp: In function 'int main(int32_t, char**)':
skyscraper.cpp:32:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
32 | auto [t, v] = *st.begin();
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
452 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
352 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
452 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
452 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
452 KB |
Output is correct |
7 |
Correct |
0 ms |
356 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
456 KB |
Output is correct |
11 |
Correct |
1 ms |
352 KB |
Output is correct |
12 |
Correct |
1 ms |
352 KB |
Output is correct |
13 |
Correct |
1 ms |
352 KB |
Output is correct |
14 |
Correct |
1 ms |
352 KB |
Output is correct |
15 |
Correct |
1 ms |
552 KB |
Output is correct |
16 |
Correct |
0 ms |
352 KB |
Output is correct |
17 |
Correct |
1 ms |
500 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
464 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
344 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
2 ms |
604 KB |
Output is correct |
25 |
Correct |
2 ms |
604 KB |
Output is correct |
26 |
Correct |
3 ms |
552 KB |
Output is correct |
27 |
Correct |
3 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
472 KB |
Output is correct |
29 |
Correct |
3 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
3 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
4 ms |
348 KB |
Output is correct |
27 |
Correct |
3 ms |
344 KB |
Output is correct |
28 |
Correct |
1 ms |
856 KB |
Output is correct |
29 |
Correct |
3 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
3 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
472 KB |
Output is correct |
35 |
Correct |
5 ms |
1364 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
5 ms |
860 KB |
Output is correct |
38 |
Correct |
6 ms |
1116 KB |
Output is correct |
39 |
Correct |
6 ms |
1116 KB |
Output is correct |
40 |
Correct |
6 ms |
1116 KB |
Output is correct |
41 |
Correct |
6 ms |
1112 KB |
Output is correct |
42 |
Correct |
45 ms |
1116 KB |
Output is correct |
43 |
Correct |
45 ms |
1188 KB |
Output is correct |
44 |
Correct |
44 ms |
1112 KB |
Output is correct |
45 |
Correct |
6 ms |
1112 KB |
Output is correct |
46 |
Correct |
6 ms |
1116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
456 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
456 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
464 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
0 ms |
464 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
464 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
4 ms |
348 KB |
Output is correct |
27 |
Correct |
3 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
3 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
456 KB |
Output is correct |
31 |
Correct |
2 ms |
620 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
3 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
856 KB |
Output is correct |
35 |
Correct |
5 ms |
984 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
5 ms |
860 KB |
Output is correct |
38 |
Correct |
6 ms |
1116 KB |
Output is correct |
39 |
Correct |
6 ms |
1116 KB |
Output is correct |
40 |
Correct |
7 ms |
1112 KB |
Output is correct |
41 |
Correct |
6 ms |
1116 KB |
Output is correct |
42 |
Correct |
45 ms |
1116 KB |
Output is correct |
43 |
Correct |
45 ms |
1116 KB |
Output is correct |
44 |
Correct |
45 ms |
1116 KB |
Output is correct |
45 |
Correct |
6 ms |
1116 KB |
Output is correct |
46 |
Correct |
6 ms |
1116 KB |
Output is correct |
47 |
Correct |
20 ms |
2136 KB |
Output is correct |
48 |
Correct |
5 ms |
1884 KB |
Output is correct |
49 |
Correct |
5 ms |
1972 KB |
Output is correct |
50 |
Correct |
4 ms |
1628 KB |
Output is correct |
51 |
Correct |
36 ms |
3672 KB |
Output is correct |
52 |
Correct |
34 ms |
3416 KB |
Output is correct |
53 |
Correct |
14 ms |
3676 KB |
Output is correct |
54 |
Correct |
3 ms |
1820 KB |
Output is correct |
55 |
Correct |
4 ms |
1880 KB |
Output is correct |
56 |
Correct |
673 ms |
4072 KB |
Output is correct |
57 |
Correct |
75 ms |
2768 KB |
Output is correct |
58 |
Correct |
718 ms |
2456 KB |
Output is correct |
59 |
Correct |
626 ms |
2644 KB |
Output is correct |
60 |
Correct |
674 ms |
2556 KB |
Output is correct |
61 |
Correct |
561 ms |
2392 KB |
Output is correct |
62 |
Correct |
8 ms |
2652 KB |
Output is correct |
63 |
Correct |
50 ms |
3344 KB |
Output is correct |
64 |
Correct |
50 ms |
3160 KB |
Output is correct |
65 |
Correct |
60 ms |
3336 KB |
Output is correct |
66 |
Correct |
83 ms |
3164 KB |
Output is correct |
67 |
Correct |
82 ms |
3164 KB |
Output is correct |