#include <iostream>
#include <vector>
#include <set>
using namespace std;
const int N = 30005, inf = 1e9;
int n, m, x[N];
vector <int> v[N];
int d[N];
set <pair <int, int>> q;
int main()
{
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 0; i < m; i++) {
int p;
cin >> x[i] >> p, v[x[i]].push_back(p);
}
int tmp = x[1];
for (int i = 0; i < n; i++)
d[i] = inf;
d[x[0]] = 0, q.insert({0, x[0]});
while (q.size()) {
int x = q.begin() -> second;
q.erase(q.begin());
if (x == tmp)
return cout << d[x], 0;
for (int i = 0; i < v[x].size(); i++) {
int j = v[x][i];
for (int k = 1; x + k * j < n; k++)
if (d[x] + k < d[x + k * j])
q.erase({d[x + k * j], x + k * j}),
d[x + k * j] = d[x] + k,
q.insert({d[x + k * j], x + k * j});
for (int k = 1; x - k * j >= 0; k++)
if (d[x] + k < d[x - k * j])
q.erase({d[x - k * j], x - k * j}),
d[x - k * j] = d[x] + k,
q.insert({d[x - k * j], x - k * j});
}
}
cout << -1;
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:36:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | for (int i = 0; i < v[x].size(); i++) {
| ~~^~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
980 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
980 KB |
Output is correct |
| 4 |
Correct |
1 ms |
980 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
980 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1032 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
980 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1044 KB |
Output is correct |
| 4 |
Correct |
1 ms |
980 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
980 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 9 |
Correct |
2 ms |
1040 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1036 KB |
Output is correct |
| 11 |
Correct |
1 ms |
980 KB |
Output is correct |
| 12 |
Correct |
1 ms |
980 KB |
Output is correct |
| 13 |
Correct |
1 ms |
980 KB |
Output is correct |
| 14 |
Correct |
1 ms |
980 KB |
Output is correct |
| 15 |
Correct |
1 ms |
980 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1036 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
980 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
1 ms |
980 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1036 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1176 KB |
Output is correct |
| 12 |
Correct |
1 ms |
980 KB |
Output is correct |
| 13 |
Correct |
1 ms |
980 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1052 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1052 KB |
Output is correct |
| 16 |
Correct |
1 ms |
980 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1056 KB |
Output is correct |
| 18 |
Correct |
1 ms |
980 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1060 KB |
Output is correct |
| 20 |
Correct |
5 ms |
1224 KB |
Output is correct |
| 21 |
Correct |
1 ms |
980 KB |
Output is correct |
| 22 |
Correct |
1 ms |
980 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1064 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1048 KB |
Output is correct |
| 29 |
Correct |
3 ms |
1112 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 31 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 32 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 33 |
Correct |
4 ms |
1108 KB |
Output is correct |
| 34 |
Correct |
4 ms |
1180 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
980 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 4 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1036 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
1 ms |
980 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 10 |
Correct |
1 ms |
980 KB |
Output is correct |
| 11 |
Correct |
1 ms |
980 KB |
Output is correct |
| 12 |
Correct |
1 ms |
980 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 14 |
Correct |
1 ms |
980 KB |
Output is correct |
| 15 |
Correct |
1 ms |
980 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1044 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 18 |
Correct |
1 ms |
980 KB |
Output is correct |
| 19 |
Correct |
1 ms |
980 KB |
Output is correct |
| 20 |
Correct |
6 ms |
1108 KB |
Output is correct |
| 21 |
Correct |
1 ms |
980 KB |
Output is correct |
| 22 |
Correct |
1 ms |
980 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1092 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 27 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 29 |
Correct |
4 ms |
1116 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1040 KB |
Output is correct |
| 31 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 32 |
Correct |
2 ms |
1052 KB |
Output is correct |
| 33 |
Correct |
5 ms |
1116 KB |
Output is correct |
| 34 |
Correct |
4 ms |
1116 KB |
Output is correct |
| 35 |
Correct |
7 ms |
1564 KB |
Output is correct |
| 36 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1488 KB |
Output is correct |
| 38 |
Correct |
8 ms |
1756 KB |
Output is correct |
| 39 |
Correct |
6 ms |
1632 KB |
Output is correct |
| 40 |
Correct |
6 ms |
1620 KB |
Output is correct |
| 41 |
Correct |
7 ms |
1720 KB |
Output is correct |
| 42 |
Correct |
4 ms |
1620 KB |
Output is correct |
| 43 |
Correct |
5 ms |
1552 KB |
Output is correct |
| 44 |
Correct |
49 ms |
1640 KB |
Output is correct |
| 45 |
Correct |
8 ms |
1552 KB |
Output is correct |
| 46 |
Correct |
8 ms |
1620 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
980 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
980 KB |
Output is correct |
| 4 |
Correct |
1 ms |
980 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
980 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1044 KB |
Output is correct |
| 8 |
Correct |
1 ms |
980 KB |
Output is correct |
| 9 |
Correct |
1 ms |
980 KB |
Output is correct |
| 10 |
Correct |
1 ms |
980 KB |
Output is correct |
| 11 |
Correct |
2 ms |
980 KB |
Output is correct |
| 12 |
Correct |
2 ms |
980 KB |
Output is correct |
| 13 |
Correct |
1 ms |
980 KB |
Output is correct |
| 14 |
Correct |
1 ms |
1044 KB |
Output is correct |
| 15 |
Correct |
1 ms |
980 KB |
Output is correct |
| 16 |
Correct |
1 ms |
980 KB |
Output is correct |
| 17 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 18 |
Correct |
1 ms |
980 KB |
Output is correct |
| 19 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1184 KB |
Output is correct |
| 21 |
Correct |
1 ms |
980 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1040 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 27 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1140 KB |
Output is correct |
| 29 |
Correct |
4 ms |
1108 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 31 |
Correct |
3 ms |
1108 KB |
Output is correct |
| 32 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 33 |
Correct |
4 ms |
1108 KB |
Output is correct |
| 34 |
Correct |
4 ms |
1184 KB |
Output is correct |
| 35 |
Correct |
7 ms |
1536 KB |
Output is correct |
| 36 |
Correct |
3 ms |
1108 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1436 KB |
Output is correct |
| 38 |
Correct |
8 ms |
1692 KB |
Output is correct |
| 39 |
Correct |
6 ms |
1576 KB |
Output is correct |
| 40 |
Correct |
7 ms |
1696 KB |
Output is correct |
| 41 |
Correct |
11 ms |
1676 KB |
Output is correct |
| 42 |
Correct |
5 ms |
1572 KB |
Output is correct |
| 43 |
Correct |
6 ms |
1568 KB |
Output is correct |
| 44 |
Correct |
52 ms |
1632 KB |
Output is correct |
| 45 |
Correct |
9 ms |
1572 KB |
Output is correct |
| 46 |
Correct |
9 ms |
1632 KB |
Output is correct |
| 47 |
Correct |
27 ms |
2328 KB |
Output is correct |
| 48 |
Correct |
5 ms |
1888 KB |
Output is correct |
| 49 |
Correct |
5 ms |
1832 KB |
Output is correct |
| 50 |
Correct |
4 ms |
1632 KB |
Output is correct |
| 51 |
Correct |
43 ms |
3592 KB |
Output is correct |
| 52 |
Correct |
37 ms |
3308 KB |
Output is correct |
| 53 |
Correct |
11 ms |
3036 KB |
Output is correct |
| 54 |
Correct |
5 ms |
1756 KB |
Output is correct |
| 55 |
Correct |
6 ms |
1756 KB |
Output is correct |
| 56 |
Correct |
675 ms |
3820 KB |
Output is correct |
| 57 |
Correct |
21 ms |
2512 KB |
Output is correct |
| 58 |
Correct |
642 ms |
2200 KB |
Output is correct |
| 59 |
Correct |
11 ms |
2332 KB |
Output is correct |
| 60 |
Correct |
10 ms |
2260 KB |
Output is correct |
| 61 |
Correct |
11 ms |
2304 KB |
Output is correct |
| 62 |
Correct |
10 ms |
2516 KB |
Output is correct |
| 63 |
Correct |
58 ms |
3076 KB |
Output is correct |
| 64 |
Correct |
64 ms |
3064 KB |
Output is correct |
| 65 |
Correct |
74 ms |
3028 KB |
Output is correct |
| 66 |
Correct |
97 ms |
3028 KB |
Output is correct |
| 67 |
Correct |
95 ms |
3040 KB |
Output is correct |
