#include <stdio.h>
#include <vector>
#include <queue>
#define N 30001
#define minus(x,y) (y?-(x):x)
#define Abs(x) (x>0?x:-(x))
#define LIMIT 1000
using namespace std;
typedef pair<int, pair<int, int> > pip;
int n, m, sw, ew, d[N];
bool check[N];
bool check2[N][LIMIT + 1];
vector<int> V[N];
queue<pip> Q;
int main() {
int x, y;
int w, p, c;
scanf("%d %d", &m, &n);
for (int i = 1; i <= n; i++) {
scanf("%d %d", &x, &y);
V[++x].push_back(y);
if (i == 1) sw = x;
if (i == 2) ew = x;
}
Q.push({ 0,{ sw,m + 1 } });
while (!Q.empty()) {
c = Q.front().first;
w = Q.front().second.first;
p = Q.front().second.second;
Q.pop();
if (check[ew]) break;
if (Abs(p) <= LIMIT) {
if(check2[w][Abs(p)]) continue;
check2[w][Abs(p)] = true;
}
if (1 <= w + p && w + p <= m) Q.push({ c + 1,{ w + p,p } });
if (!check[w]) {
check[w] = true, d[w] = c;
for (auto i : V[w]) {
if (1 <= w + i && w + i <= m) Q.push({ c + 1,{ w + i,i } });
if (1 <= w - i && w - i <= m) Q.push({ c + 1,{ w - i,-i } });
}
}
} printf("%d", check[ew] ? d[ew] : -1);
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:21:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &m, &n);
^
skyscraper.cpp:23:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &x, &y);
^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
32112 KB |
Output is correct |
2 |
Correct |
0 ms |
32112 KB |
Output is correct |
3 |
Correct |
0 ms |
32112 KB |
Output is correct |
4 |
Correct |
0 ms |
32112 KB |
Output is correct |
5 |
Correct |
0 ms |
32112 KB |
Output is correct |
6 |
Correct |
0 ms |
32112 KB |
Output is correct |
7 |
Correct |
0 ms |
32112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
32112 KB |
Output is correct |
2 |
Correct |
0 ms |
32112 KB |
Output is correct |
3 |
Correct |
0 ms |
32112 KB |
Output is correct |
4 |
Correct |
0 ms |
32112 KB |
Output is correct |
5 |
Correct |
0 ms |
32112 KB |
Output is correct |
6 |
Correct |
0 ms |
32112 KB |
Output is correct |
7 |
Correct |
0 ms |
32112 KB |
Output is correct |
8 |
Correct |
0 ms |
32112 KB |
Output is correct |
9 |
Correct |
0 ms |
32112 KB |
Output is correct |
10 |
Correct |
0 ms |
32112 KB |
Output is correct |
11 |
Correct |
0 ms |
32112 KB |
Output is correct |
12 |
Correct |
0 ms |
32244 KB |
Output is correct |
13 |
Correct |
0 ms |
32244 KB |
Output is correct |
14 |
Correct |
0 ms |
32112 KB |
Output is correct |
15 |
Correct |
0 ms |
32112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
32112 KB |
Output is correct |
2 |
Correct |
0 ms |
32112 KB |
Output is correct |
3 |
Correct |
0 ms |
32112 KB |
Output is correct |
4 |
Correct |
0 ms |
32112 KB |
Output is correct |
5 |
Correct |
0 ms |
32112 KB |
Output is correct |
6 |
Correct |
0 ms |
32112 KB |
Output is correct |
7 |
Correct |
0 ms |
32112 KB |
Output is correct |
8 |
Correct |
0 ms |
32112 KB |
Output is correct |
9 |
Correct |
0 ms |
32112 KB |
Output is correct |
10 |
Correct |
0 ms |
32112 KB |
Output is correct |
11 |
Correct |
0 ms |
32112 KB |
Output is correct |
12 |
Correct |
0 ms |
32244 KB |
Output is correct |
13 |
Correct |
0 ms |
32244 KB |
Output is correct |
14 |
Correct |
0 ms |
32112 KB |
Output is correct |
15 |
Correct |
0 ms |
32112 KB |
Output is correct |
16 |
Correct |
0 ms |
32112 KB |
Output is correct |
17 |
Correct |
0 ms |
32112 KB |
Output is correct |
18 |
Correct |
0 ms |
32112 KB |
Output is correct |
19 |
Correct |
0 ms |
32112 KB |
Output is correct |
20 |
Correct |
0 ms |
32244 KB |
Output is correct |
21 |
Correct |
0 ms |
32112 KB |
Output is correct |
22 |
Correct |
0 ms |
32112 KB |
Output is correct |
23 |
Correct |
0 ms |
32112 KB |
Output is correct |
24 |
Correct |
0 ms |
32112 KB |
Output is correct |
25 |
Correct |
0 ms |
32112 KB |
Output is correct |
26 |
Correct |
0 ms |
32112 KB |
Output is correct |
27 |
Correct |
3 ms |
32244 KB |
Output is correct |
28 |
Correct |
3 ms |
32244 KB |
Output is correct |
29 |
Correct |
0 ms |
32112 KB |
Output is correct |
30 |
Correct |
0 ms |
32112 KB |
Output is correct |
31 |
Correct |
0 ms |
32112 KB |
Output is correct |
32 |
Correct |
0 ms |
32112 KB |
Output is correct |
33 |
Correct |
0 ms |
32112 KB |
Output is correct |
34 |
Correct |
0 ms |
32112 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
32112 KB |
Output is correct |
2 |
Correct |
0 ms |
32112 KB |
Output is correct |
3 |
Correct |
0 ms |
32112 KB |
Output is correct |
4 |
Correct |
0 ms |
32112 KB |
Output is correct |
5 |
Correct |
0 ms |
32112 KB |
Output is correct |
6 |
Correct |
0 ms |
32112 KB |
Output is correct |
7 |
Correct |
0 ms |
32112 KB |
Output is correct |
8 |
Correct |
0 ms |
32112 KB |
Output is correct |
9 |
Correct |
0 ms |
32112 KB |
Output is correct |
10 |
Correct |
0 ms |
32112 KB |
Output is correct |
11 |
Correct |
0 ms |
32112 KB |
Output is correct |
12 |
Correct |
0 ms |
32244 KB |
Output is correct |
13 |
Correct |
0 ms |
32244 KB |
Output is correct |
14 |
Correct |
0 ms |
32112 KB |
Output is correct |
15 |
Correct |
0 ms |
32112 KB |
Output is correct |
16 |
Correct |
0 ms |
32112 KB |
Output is correct |
17 |
Correct |
0 ms |
32112 KB |
Output is correct |
18 |
Correct |
0 ms |
32112 KB |
Output is correct |
19 |
Correct |
0 ms |
32112 KB |
Output is correct |
20 |
Correct |
3 ms |
32244 KB |
Output is correct |
21 |
Correct |
0 ms |
32112 KB |
Output is correct |
22 |
Correct |
0 ms |
32112 KB |
Output is correct |
23 |
Correct |
0 ms |
32112 KB |
Output is correct |
24 |
Correct |
0 ms |
32112 KB |
Output is correct |
25 |
Correct |
0 ms |
32112 KB |
Output is correct |
26 |
Correct |
0 ms |
32112 KB |
Output is correct |
27 |
Correct |
0 ms |
32244 KB |
Output is correct |
28 |
Correct |
0 ms |
32244 KB |
Output is correct |
29 |
Correct |
0 ms |
32112 KB |
Output is correct |
30 |
Correct |
0 ms |
32112 KB |
Output is correct |
31 |
Correct |
3 ms |
32112 KB |
Output is correct |
32 |
Correct |
0 ms |
32112 KB |
Output is correct |
33 |
Correct |
3 ms |
32112 KB |
Output is correct |
34 |
Correct |
0 ms |
32112 KB |
Output is correct |
35 |
Correct |
6 ms |
32508 KB |
Output is correct |
36 |
Correct |
3 ms |
32244 KB |
Output is correct |
37 |
Correct |
6 ms |
32508 KB |
Output is correct |
38 |
Correct |
9 ms |
32648 KB |
Output is correct |
39 |
Correct |
6 ms |
32376 KB |
Output is correct |
40 |
Correct |
9 ms |
32376 KB |
Output is correct |
41 |
Correct |
9 ms |
32376 KB |
Output is correct |
42 |
Correct |
3 ms |
32388 KB |
Output is correct |
43 |
Correct |
6 ms |
32984 KB |
Output is correct |
44 |
Correct |
9 ms |
33016 KB |
Output is correct |
45 |
Correct |
13 ms |
32640 KB |
Output is correct |
46 |
Correct |
9 ms |
32640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
32112 KB |
Output is correct |
2 |
Correct |
0 ms |
32112 KB |
Output is correct |
3 |
Correct |
0 ms |
32112 KB |
Output is correct |
4 |
Correct |
0 ms |
32112 KB |
Output is correct |
5 |
Correct |
0 ms |
32112 KB |
Output is correct |
6 |
Correct |
0 ms |
32112 KB |
Output is correct |
7 |
Correct |
0 ms |
32112 KB |
Output is correct |
8 |
Correct |
0 ms |
32112 KB |
Output is correct |
9 |
Correct |
0 ms |
32112 KB |
Output is correct |
10 |
Correct |
0 ms |
32112 KB |
Output is correct |
11 |
Correct |
0 ms |
32112 KB |
Output is correct |
12 |
Correct |
0 ms |
32244 KB |
Output is correct |
13 |
Correct |
0 ms |
32244 KB |
Output is correct |
14 |
Correct |
0 ms |
32112 KB |
Output is correct |
15 |
Correct |
0 ms |
32112 KB |
Output is correct |
16 |
Correct |
0 ms |
32112 KB |
Output is correct |
17 |
Correct |
0 ms |
32112 KB |
Output is correct |
18 |
Correct |
0 ms |
32112 KB |
Output is correct |
19 |
Correct |
0 ms |
32112 KB |
Output is correct |
20 |
Correct |
3 ms |
32244 KB |
Output is correct |
21 |
Correct |
0 ms |
32112 KB |
Output is correct |
22 |
Correct |
0 ms |
32112 KB |
Output is correct |
23 |
Correct |
3 ms |
32112 KB |
Output is correct |
24 |
Correct |
3 ms |
32112 KB |
Output is correct |
25 |
Correct |
0 ms |
32112 KB |
Output is correct |
26 |
Correct |
0 ms |
32112 KB |
Output is correct |
27 |
Correct |
3 ms |
32244 KB |
Output is correct |
28 |
Correct |
3 ms |
32244 KB |
Output is correct |
29 |
Correct |
0 ms |
32112 KB |
Output is correct |
30 |
Correct |
0 ms |
32112 KB |
Output is correct |
31 |
Correct |
0 ms |
32112 KB |
Output is correct |
32 |
Correct |
0 ms |
32112 KB |
Output is correct |
33 |
Correct |
3 ms |
32112 KB |
Output is correct |
34 |
Correct |
3 ms |
32112 KB |
Output is correct |
35 |
Correct |
9 ms |
32508 KB |
Output is correct |
36 |
Correct |
3 ms |
32244 KB |
Output is correct |
37 |
Correct |
3 ms |
32508 KB |
Output is correct |
38 |
Correct |
6 ms |
32648 KB |
Output is correct |
39 |
Correct |
6 ms |
32376 KB |
Output is correct |
40 |
Correct |
9 ms |
32376 KB |
Output is correct |
41 |
Correct |
9 ms |
32376 KB |
Output is correct |
42 |
Correct |
6 ms |
32388 KB |
Output is correct |
43 |
Correct |
9 ms |
32984 KB |
Output is correct |
44 |
Correct |
3 ms |
33016 KB |
Output is correct |
45 |
Correct |
16 ms |
32640 KB |
Output is correct |
46 |
Correct |
9 ms |
32640 KB |
Output is correct |
47 |
Correct |
9 ms |
32508 KB |
Output is correct |
48 |
Correct |
6 ms |
32640 KB |
Output is correct |
49 |
Correct |
6 ms |
32640 KB |
Output is correct |
50 |
Correct |
3 ms |
32508 KB |
Output is correct |
51 |
Correct |
19 ms |
32772 KB |
Output is correct |
52 |
Correct |
13 ms |
32772 KB |
Output is correct |
53 |
Correct |
9 ms |
32772 KB |
Output is correct |
54 |
Correct |
6 ms |
32112 KB |
Output is correct |
55 |
Correct |
3 ms |
32112 KB |
Output is correct |
56 |
Correct |
13 ms |
33036 KB |
Output is correct |
57 |
Correct |
0 ms |
32244 KB |
Output is correct |
58 |
Correct |
13 ms |
32980 KB |
Output is correct |
59 |
Correct |
13 ms |
32384 KB |
Output is correct |
60 |
Correct |
16 ms |
32392 KB |
Output is correct |
61 |
Correct |
23 ms |
32996 KB |
Output is correct |
62 |
Correct |
56 ms |
33036 KB |
Output is correct |
63 |
Correct |
113 ms |
32644 KB |
Output is correct |
64 |
Correct |
119 ms |
32508 KB |
Output is correct |
65 |
Correct |
99 ms |
32640 KB |
Output is correct |
66 |
Correct |
153 ms |
32640 KB |
Output is correct |
67 |
Correct |
79 ms |
32640 KB |
Output is correct |