#include <bits/stdc++.h>
using namespace std;
const int MAX_N = 30000;
vector<pair<int, int> > graph[MAX_N];
map<pair<int, int>, bool> doges;
int dist[MAX_N];
int dijkstra(int n, int src, int dest) {
priority_queue<pair<int, int>, vector<pair<int, int> >, greater<pair<int, int> > > pq;
memset(dist, 0x3f3f3f3f, sizeof(dist));
dist[src] = 0;
pq.push(make_pair(0, src));
while(!pq.empty()) {
int nod = pq.top().second, distNod = pq.top().first;
pq.pop();
if(dist[nod] == distNod) {
for(auto it: graph[nod])
if(distNod + it.second < dist[it.first]) {
dist[it.first] = distNod + it.second;
pq.push(make_pair(dist[it.first], it.first));
}
}
}
if(dist[dest] == 0x3f3f3f3f)
return -1;
else
return dist[dest];
}
int main() {
int n, m, b, p, src, dest;
scanf("%d%d", &n, &m);
for(int i = 0; i < m; ++i) {
scanf("%d%d", &b, &p);
if(i == 0)
src = b;
if(i == 1)
dest = b;
doges[make_pair(b, p)] = true;
}
for(auto it: doges) {
pair<int, int> doge = it.first;
if(it.second) {
int poz = doge.first - doge.second, cost = 1;
bool foundSimilar = false;
while(poz >= 0 && !foundSimilar) {
graph[doge.first].push_back(make_pair(poz, cost++));
if(doges[make_pair(poz, doge.second)])
foundSimilar = true;
poz -= doge.second;
}
poz = doge.first + doge.second, cost = 1;
foundSimilar = false;
while(poz < n && !foundSimilar) {
graph[doge.first].push_back(make_pair(poz, cost++));
if(doges[make_pair(poz, doge.second)])
foundSimilar = true;
poz += doge.second;
}
}
}
printf("%d", dijkstra(n, src, dest));
return 0;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:38:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &b, &p);
~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:72:9: warning: 'dest' may be used uninitialized in this function [-Wmaybe-uninitialized]
printf("%d", dijkstra(n, src, dest));
~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:72:9: warning: 'src' may be used uninitialized in this function [-Wmaybe-uninitialized]
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
1276 KB |
Output is correct |
| 2 |
Correct |
4 ms |
1376 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1392 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1416 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1548 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1660 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1660 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1660 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1660 KB |
Output is correct |
| 4 |
Correct |
4 ms |
1660 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1660 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1720 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1720 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1720 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1720 KB |
Output is correct |
| 10 |
Correct |
4 ms |
1808 KB |
Output is correct |
| 11 |
Correct |
5 ms |
1940 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1940 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1940 KB |
Output is correct |
| 14 |
Correct |
5 ms |
2136 KB |
Output is correct |
| 15 |
Correct |
5 ms |
2164 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 2 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 4 |
Correct |
4 ms |
2164 KB |
Output is correct |
| 5 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 6 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 7 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2164 KB |
Output is correct |
| 9 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 10 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2164 KB |
Output is correct |
| 12 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 13 |
Correct |
3 ms |
2164 KB |
Output is correct |
| 14 |
Correct |
6 ms |
2336 KB |
Output is correct |
| 15 |
Correct |
5 ms |
2336 KB |
Output is correct |
| 16 |
Correct |
5 ms |
2336 KB |
Output is correct |
| 17 |
Correct |
13 ms |
3072 KB |
Output is correct |
| 18 |
Correct |
5 ms |
3072 KB |
Output is correct |
| 19 |
Correct |
5 ms |
3072 KB |
Output is correct |
| 20 |
Correct |
4 ms |
3072 KB |
Output is correct |
| 21 |
Correct |
4 ms |
3072 KB |
Output is correct |
| 22 |
Correct |
6 ms |
3072 KB |
Output is correct |
| 23 |
Correct |
8 ms |
3072 KB |
Output is correct |
| 24 |
Correct |
11 ms |
3072 KB |
Output is correct |
| 25 |
Correct |
9 ms |
3072 KB |
Output is correct |
| 26 |
Correct |
7 ms |
3072 KB |
Output is correct |
| 27 |
Correct |
6 ms |
3072 KB |
Output is correct |
| 28 |
Correct |
12 ms |
3732 KB |
Output is correct |
| 29 |
Correct |
46 ms |
6756 KB |
Output is correct |
| 30 |
Correct |
11 ms |
6756 KB |
Output is correct |
| 31 |
Correct |
18 ms |
6756 KB |
Output is correct |
| 32 |
Correct |
16 ms |
6756 KB |
Output is correct |
| 33 |
Correct |
90 ms |
11216 KB |
Output is correct |
| 34 |
Correct |
86 ms |
11216 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 2 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 3 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 4 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 5 |
Correct |
4 ms |
11216 KB |
Output is correct |
| 6 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 7 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 8 |
Correct |
2 ms |
11216 KB |
Output is correct |
| 9 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 10 |
Correct |
4 ms |
11216 KB |
Output is correct |
| 11 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 12 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 13 |
Correct |
3 ms |
11216 KB |
Output is correct |
| 14 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 15 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 16 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 17 |
Correct |
10 ms |
11216 KB |
Output is correct |
| 18 |
Correct |
6 ms |
11216 KB |
Output is correct |
| 19 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 20 |
Correct |
4 ms |
11216 KB |
Output is correct |
| 21 |
Correct |
4 ms |
11216 KB |
Output is correct |
| 22 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 23 |
Correct |
7 ms |
11216 KB |
Output is correct |
| 24 |
Correct |
10 ms |
11216 KB |
Output is correct |
| 25 |
Correct |
8 ms |
11216 KB |
Output is correct |
| 26 |
Correct |
6 ms |
11216 KB |
Output is correct |
| 27 |
Correct |
5 ms |
11216 KB |
Output is correct |
| 28 |
Correct |
15 ms |
11216 KB |
Output is correct |
| 29 |
Correct |
48 ms |
11216 KB |
Output is correct |
| 30 |
Correct |
12 ms |
11216 KB |
Output is correct |
| 31 |
Correct |
18 ms |
11216 KB |
Output is correct |
| 32 |
Correct |
14 ms |
11216 KB |
Output is correct |
| 33 |
Correct |
82 ms |
11536 KB |
Output is correct |
| 34 |
Correct |
79 ms |
11536 KB |
Output is correct |
| 35 |
Correct |
79 ms |
11536 KB |
Output is correct |
| 36 |
Correct |
13 ms |
11536 KB |
Output is correct |
| 37 |
Correct |
130 ms |
15860 KB |
Output is correct |
| 38 |
Correct |
148 ms |
15860 KB |
Output is correct |
| 39 |
Correct |
136 ms |
15860 KB |
Output is correct |
| 40 |
Correct |
138 ms |
15860 KB |
Output is correct |
| 41 |
Correct |
143 ms |
16020 KB |
Output is correct |
| 42 |
Correct |
12 ms |
16020 KB |
Output is correct |
| 43 |
Correct |
11 ms |
16020 KB |
Output is correct |
| 44 |
Correct |
11 ms |
16020 KB |
Output is correct |
| 45 |
Correct |
752 ms |
39696 KB |
Output is correct |
| 46 |
Correct |
523 ms |
39776 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 2 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 3 |
Correct |
4 ms |
39776 KB |
Output is correct |
| 4 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 5 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 6 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 7 |
Correct |
2 ms |
39776 KB |
Output is correct |
| 8 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 9 |
Correct |
3 ms |
39776 KB |
Output is correct |
| 10 |
Correct |
4 ms |
39776 KB |
Output is correct |
| 11 |
Correct |
5 ms |
39776 KB |
Output is correct |
| 12 |
Correct |
4 ms |
39776 KB |
Output is correct |
| 13 |
Correct |
5 ms |
39776 KB |
Output is correct |
| 14 |
Correct |
6 ms |
39776 KB |
Output is correct |
| 15 |
Correct |
6 ms |
39776 KB |
Output is correct |
| 16 |
Correct |
4 ms |
39776 KB |
Output is correct |
| 17 |
Correct |
11 ms |
39776 KB |
Output is correct |
| 18 |
Correct |
6 ms |
39776 KB |
Output is correct |
| 19 |
Correct |
5 ms |
39776 KB |
Output is correct |
| 20 |
Correct |
4 ms |
39776 KB |
Output is correct |
| 21 |
Correct |
5 ms |
39776 KB |
Output is correct |
| 22 |
Correct |
5 ms |
39776 KB |
Output is correct |
| 23 |
Correct |
8 ms |
39776 KB |
Output is correct |
| 24 |
Correct |
11 ms |
39776 KB |
Output is correct |
| 25 |
Correct |
8 ms |
39776 KB |
Output is correct |
| 26 |
Correct |
7 ms |
39776 KB |
Output is correct |
| 27 |
Correct |
7 ms |
39776 KB |
Output is correct |
| 28 |
Correct |
14 ms |
39776 KB |
Output is correct |
| 29 |
Correct |
45 ms |
39776 KB |
Output is correct |
| 30 |
Correct |
12 ms |
39776 KB |
Output is correct |
| 31 |
Correct |
22 ms |
39776 KB |
Output is correct |
| 32 |
Correct |
13 ms |
39776 KB |
Output is correct |
| 33 |
Correct |
80 ms |
39776 KB |
Output is correct |
| 34 |
Correct |
83 ms |
39776 KB |
Output is correct |
| 35 |
Correct |
75 ms |
39776 KB |
Output is correct |
| 36 |
Correct |
16 ms |
39776 KB |
Output is correct |
| 37 |
Correct |
176 ms |
39776 KB |
Output is correct |
| 38 |
Correct |
139 ms |
39776 KB |
Output is correct |
| 39 |
Correct |
146 ms |
39776 KB |
Output is correct |
| 40 |
Correct |
152 ms |
39776 KB |
Output is correct |
| 41 |
Correct |
200 ms |
39776 KB |
Output is correct |
| 42 |
Correct |
11 ms |
39776 KB |
Output is correct |
| 43 |
Correct |
10 ms |
39776 KB |
Output is correct |
| 44 |
Correct |
14 ms |
39776 KB |
Output is correct |
| 45 |
Correct |
771 ms |
42392 KB |
Output is correct |
| 46 |
Correct |
654 ms |
42648 KB |
Output is correct |
| 47 |
Execution timed out |
1097 ms |
63800 KB |
Time limit exceeded |
| 48 |
Halted |
0 ms |
0 KB |
- |
