#include <bits/stdc++.h>
#define mk make_pair
#define pb push_back
#define fr first
#define sc second
using namespace std;
const int N = 3e4 + 5;
int n, m, en, pos, p, d[N], st;
set <int, greater <int> > vec[N];
vector < vector <pair <int, int> > > g;
priority_queue < pair <int, int> > q;
int main()
{
cin >> n >> m;
g.resize(n);
for (int i = 1; i <= m; i++)
{
scanf("%d%d", &pos, &p);
vec[pos].insert(p);
if (i == 1)
st = pos;
if (i == 2)
en = pos;
}
for (int i = 0; i < n; i++)
{
for (auto to : vec[i])
{
for (int j = i - to; j >= 0; j -= to)
{
g[i].pb(mk(j, (i - j) / to ) );
if (vec[j].lower_bound(to) != vec[j].end() && *vec[j].lower_bound(to) == to)
break;
}
for (int j = i + to; j < n; j += to)
{
g[i].pb(mk(j, (j - i) / to ) );
if (vec[j].lower_bound(to) != vec[j].end() && *vec[j].lower_bound(to) == to)
break;
}
}
}
memset(d, 0x3f3f3f3f, sizeof(d));
d[st] = 0;
q.push( mk( 0, st ) );
while (!q.empty())
{
int v = q.top().sc, len = -q.top().fr;
q.pop();
if (d[v] < len) continue;
for (auto to : g[v])
{
if (d[to.fr] > d[v] + to.sc)
{
d[to.fr] = d[v] + to.sc;
q.push( mk( -d[to.fr], to.fr ) );
}
}
}
if (d[en] > 1e9)
d[en] = -1;
cout << d[en] << endl;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &pos, &p);
~~~~~^~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1912 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1916 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1916 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1992 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1992 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2040 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2096 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
2128 KB |
Output is correct |
| 2 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 3 |
Correct |
4 ms |
2152 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 5 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 8 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 9 |
Correct |
3 ms |
2152 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2172 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 12 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 13 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 14 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 15 |
Correct |
4 ms |
2276 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 2 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 5 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 8 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 9 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 12 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 13 |
Correct |
3 ms |
2276 KB |
Output is correct |
| 14 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 15 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 16 |
Correct |
4 ms |
2276 KB |
Output is correct |
| 17 |
Correct |
5 ms |
2428 KB |
Output is correct |
| 18 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2428 KB |
Output is correct |
| 20 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 21 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 22 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 23 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 24 |
Correct |
5 ms |
2428 KB |
Output is correct |
| 25 |
Correct |
5 ms |
2428 KB |
Output is correct |
| 26 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 27 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 28 |
Correct |
4 ms |
2428 KB |
Output is correct |
| 29 |
Correct |
5 ms |
2940 KB |
Output is correct |
| 30 |
Correct |
4 ms |
2940 KB |
Output is correct |
| 31 |
Correct |
5 ms |
2940 KB |
Output is correct |
| 32 |
Correct |
5 ms |
2940 KB |
Output is correct |
| 33 |
Correct |
7 ms |
3496 KB |
Output is correct |
| 34 |
Correct |
9 ms |
3496 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 2 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 3 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 4 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 5 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 6 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 7 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 8 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 9 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 10 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 11 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 12 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 13 |
Correct |
3 ms |
3496 KB |
Output is correct |
| 14 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 15 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 16 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 17 |
Correct |
5 ms |
3496 KB |
Output is correct |
| 18 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 19 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 20 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 21 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 22 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 23 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 24 |
Correct |
5 ms |
3496 KB |
Output is correct |
| 25 |
Correct |
5 ms |
3496 KB |
Output is correct |
| 26 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 27 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 28 |
Correct |
5 ms |
3496 KB |
Output is correct |
| 29 |
Correct |
6 ms |
3496 KB |
Output is correct |
| 30 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 31 |
Correct |
5 ms |
3496 KB |
Output is correct |
| 32 |
Correct |
4 ms |
3496 KB |
Output is correct |
| 33 |
Correct |
7 ms |
3496 KB |
Output is correct |
| 34 |
Correct |
7 ms |
3496 KB |
Output is correct |
| 35 |
Correct |
27 ms |
4348 KB |
Output is correct |
| 36 |
Correct |
6 ms |
4348 KB |
Output is correct |
| 37 |
Correct |
29 ms |
5116 KB |
Output is correct |
| 38 |
Correct |
33 ms |
5376 KB |
Output is correct |
| 39 |
Correct |
34 ms |
5376 KB |
Output is correct |
| 40 |
Correct |
37 ms |
5376 KB |
Output is correct |
| 41 |
Correct |
32 ms |
5376 KB |
Output is correct |
| 42 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 43 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 44 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 45 |
Correct |
30 ms |
7676 KB |
Output is correct |
| 46 |
Correct |
38 ms |
7676 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 2 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 3 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 4 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 5 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 6 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 7 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 8 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 9 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 10 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 11 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 12 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 13 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 14 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 15 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 16 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 17 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 18 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 19 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 20 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 21 |
Correct |
3 ms |
7676 KB |
Output is correct |
| 22 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 23 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 24 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 25 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 26 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 27 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 28 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 29 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 30 |
Correct |
4 ms |
7676 KB |
Output is correct |
| 31 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 32 |
Correct |
5 ms |
7676 KB |
Output is correct |
| 33 |
Correct |
7 ms |
7676 KB |
Output is correct |
| 34 |
Correct |
7 ms |
7676 KB |
Output is correct |
| 35 |
Correct |
25 ms |
7676 KB |
Output is correct |
| 36 |
Correct |
6 ms |
7676 KB |
Output is correct |
| 37 |
Correct |
29 ms |
7676 KB |
Output is correct |
| 38 |
Correct |
48 ms |
7676 KB |
Output is correct |
| 39 |
Correct |
36 ms |
7676 KB |
Output is correct |
| 40 |
Correct |
31 ms |
7676 KB |
Output is correct |
| 41 |
Correct |
34 ms |
7676 KB |
Output is correct |
| 42 |
Correct |
14 ms |
7676 KB |
Output is correct |
| 43 |
Correct |
14 ms |
7676 KB |
Output is correct |
| 44 |
Correct |
14 ms |
7676 KB |
Output is correct |
| 45 |
Correct |
31 ms |
7676 KB |
Output is correct |
| 46 |
Correct |
46 ms |
7676 KB |
Output is correct |
| 47 |
Correct |
66 ms |
12792 KB |
Output is correct |
| 48 |
Correct |
25 ms |
12792 KB |
Output is correct |
| 49 |
Correct |
21 ms |
12792 KB |
Output is correct |
| 50 |
Correct |
20 ms |
12792 KB |
Output is correct |
| 51 |
Correct |
57 ms |
12792 KB |
Output is correct |
| 52 |
Correct |
53 ms |
12792 KB |
Output is correct |
| 53 |
Correct |
28 ms |
12792 KB |
Output is correct |
| 54 |
Correct |
6 ms |
12792 KB |
Output is correct |
| 55 |
Correct |
7 ms |
12792 KB |
Output is correct |
| 56 |
Correct |
20 ms |
12792 KB |
Output is correct |
| 57 |
Correct |
50 ms |
12792 KB |
Output is correct |
| 58 |
Correct |
13 ms |
12792 KB |
Output is correct |
| 59 |
Correct |
14 ms |
12792 KB |
Output is correct |
| 60 |
Correct |
16 ms |
12792 KB |
Output is correct |
| 61 |
Correct |
17 ms |
12792 KB |
Output is correct |
| 62 |
Correct |
33 ms |
12792 KB |
Output is correct |
| 63 |
Correct |
95 ms |
27100 KB |
Output is correct |
| 64 |
Correct |
99 ms |
30272 KB |
Output is correct |
| 65 |
Correct |
128 ms |
40444 KB |
Output is correct |
| 66 |
Correct |
199 ms |
65488 KB |
Output is correct |
| 67 |
Correct |
197 ms |
65648 KB |
Output is correct |
