#include<bits/stdc++.h>
using namespace std;
#include<fstream>
#define ll long long
#define vt vector
#define pb push_back
#define fi first
#define se second
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
typedef unsigned long long ull;
#define pii pair<int, int>
#define pll pair<ll, ll>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const ll mod= 1e9 + 7;
const int mxk = 1e3, sq = 750, mxn = 3e4;
const ll inf = -1e18;
int n, m;
vt<pii>adj[mxn + 1];
int b[mxn + 1], p[mxn + 1];
set<int>s[mxn + 1];
map<int, int>alr[mxn + 1];
ll d[mxn + 1];
struct ch{
int u; ll d;
};
struct cmp{
bool operator ()(const ch &a, const ch &b){
return(a.d > b.d);
}
};
signed main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
forr(i, 0, m){
cin >> b[i] >> p[i];
s[b[i]].insert(p[i]);
}
forr(i, 0, m){
if(alr[b[i]][p[i]])continue;
alr[b[i]][p[i]] = true;
int pos = b[i];
for(int j = pos - p[i]; j >= 0; j -= p[i]){
adj[pos].pb({j, (pos - j) / p[i]});
//cout << pos << ' ' << j << " ";
if(s[j].count(p[i]))break;
}
for(int j = pos + p[i]; j < n; j += p[i]){
adj[pos].pb({j, (j - pos) / p[i]});
if(s[j].count(p[i]))break;
}
}
for(int i = 0; i < n; i++)d[i] = 1e18;
priority_queue<ch, vt<ch>, cmp>pq; d[b[0]] = 0; pq.push({b[0], d[b[0]]});
while(pq.size()){
auto [u, dd] = pq.top(); pq.pop();
if(d[u] != dd)continue;
if(u == b[1]){
cout << d[u];
return(0);
}
for(auto [v, w]: adj[u]){
if(d[u] + w < d[v]){
d[v] = d[u] + w;
pq.push({v, d[v]});
}
}
}
cout << -1;
return(0);
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:61:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
61 | auto [u, dd] = pq.top(); pq.pop();
| ^
skyscraper.cpp:68:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
68 | for(auto [v, w]: adj[u]){
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3796 KB |
Output is correct |
2 |
Correct |
2 ms |
3796 KB |
Output is correct |
3 |
Correct |
2 ms |
3796 KB |
Output is correct |
4 |
Correct |
2 ms |
3796 KB |
Output is correct |
5 |
Correct |
2 ms |
3796 KB |
Output is correct |
6 |
Correct |
2 ms |
3796 KB |
Output is correct |
7 |
Correct |
2 ms |
3796 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3796 KB |
Output is correct |
2 |
Correct |
2 ms |
3796 KB |
Output is correct |
3 |
Correct |
2 ms |
3796 KB |
Output is correct |
4 |
Correct |
2 ms |
3796 KB |
Output is correct |
5 |
Correct |
2 ms |
3796 KB |
Output is correct |
6 |
Correct |
2 ms |
3796 KB |
Output is correct |
7 |
Correct |
2 ms |
3796 KB |
Output is correct |
8 |
Correct |
2 ms |
3796 KB |
Output is correct |
9 |
Correct |
2 ms |
3796 KB |
Output is correct |
10 |
Correct |
2 ms |
3796 KB |
Output is correct |
11 |
Correct |
3 ms |
4052 KB |
Output is correct |
12 |
Correct |
3 ms |
3796 KB |
Output is correct |
13 |
Correct |
3 ms |
3796 KB |
Output is correct |
14 |
Correct |
3 ms |
4052 KB |
Output is correct |
15 |
Correct |
3 ms |
4052 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3796 KB |
Output is correct |
2 |
Correct |
2 ms |
3796 KB |
Output is correct |
3 |
Correct |
2 ms |
3796 KB |
Output is correct |
4 |
Correct |
2 ms |
3796 KB |
Output is correct |
5 |
Correct |
2 ms |
3796 KB |
Output is correct |
6 |
Correct |
2 ms |
3796 KB |
Output is correct |
7 |
Correct |
2 ms |
3796 KB |
Output is correct |
8 |
Correct |
2 ms |
3796 KB |
Output is correct |
9 |
Correct |
2 ms |
3796 KB |
Output is correct |
10 |
Correct |
2 ms |
3796 KB |
Output is correct |
11 |
Correct |
3 ms |
4052 KB |
Output is correct |
12 |
Correct |
2 ms |
3796 KB |
Output is correct |
13 |
Correct |
2 ms |
3796 KB |
Output is correct |
14 |
Correct |
3 ms |
4052 KB |
Output is correct |
15 |
Correct |
3 ms |
4052 KB |
Output is correct |
16 |
Correct |
2 ms |
3924 KB |
Output is correct |
17 |
Correct |
3 ms |
4180 KB |
Output is correct |
18 |
Correct |
3 ms |
3924 KB |
Output is correct |
19 |
Correct |
3 ms |
3924 KB |
Output is correct |
20 |
Correct |
4 ms |
4092 KB |
Output is correct |
21 |
Correct |
3 ms |
3924 KB |
Output is correct |
22 |
Correct |
3 ms |
3924 KB |
Output is correct |
23 |
Correct |
3 ms |
4052 KB |
Output is correct |
24 |
Correct |
4 ms |
4180 KB |
Output is correct |
25 |
Correct |
3 ms |
4180 KB |
Output is correct |
26 |
Correct |
2 ms |
3924 KB |
Output is correct |
27 |
Correct |
2 ms |
3924 KB |
Output is correct |
28 |
Correct |
3 ms |
4308 KB |
Output is correct |
29 |
Correct |
5 ms |
4948 KB |
Output is correct |
30 |
Correct |
3 ms |
4308 KB |
Output is correct |
31 |
Correct |
4 ms |
4396 KB |
Output is correct |
32 |
Correct |
3 ms |
4308 KB |
Output is correct |
33 |
Correct |
6 ms |
5680 KB |
Output is correct |
34 |
Correct |
6 ms |
5620 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3796 KB |
Output is correct |
2 |
Correct |
2 ms |
3796 KB |
Output is correct |
3 |
Correct |
2 ms |
3796 KB |
Output is correct |
4 |
Correct |
2 ms |
3796 KB |
Output is correct |
5 |
Correct |
2 ms |
3796 KB |
Output is correct |
6 |
Correct |
2 ms |
3796 KB |
Output is correct |
7 |
Correct |
2 ms |
3796 KB |
Output is correct |
8 |
Correct |
2 ms |
3796 KB |
Output is correct |
9 |
Correct |
2 ms |
3796 KB |
Output is correct |
10 |
Correct |
2 ms |
3796 KB |
Output is correct |
11 |
Correct |
3 ms |
4052 KB |
Output is correct |
12 |
Correct |
2 ms |
3796 KB |
Output is correct |
13 |
Correct |
2 ms |
3796 KB |
Output is correct |
14 |
Correct |
3 ms |
4068 KB |
Output is correct |
15 |
Correct |
3 ms |
4052 KB |
Output is correct |
16 |
Correct |
2 ms |
3924 KB |
Output is correct |
17 |
Correct |
5 ms |
4180 KB |
Output is correct |
18 |
Correct |
2 ms |
3924 KB |
Output is correct |
19 |
Correct |
3 ms |
3924 KB |
Output is correct |
20 |
Correct |
3 ms |
4052 KB |
Output is correct |
21 |
Correct |
2 ms |
3924 KB |
Output is correct |
22 |
Correct |
2 ms |
3924 KB |
Output is correct |
23 |
Correct |
3 ms |
4052 KB |
Output is correct |
24 |
Correct |
3 ms |
4180 KB |
Output is correct |
25 |
Correct |
3 ms |
4180 KB |
Output is correct |
26 |
Correct |
2 ms |
4052 KB |
Output is correct |
27 |
Correct |
2 ms |
3924 KB |
Output is correct |
28 |
Correct |
3 ms |
4308 KB |
Output is correct |
29 |
Correct |
4 ms |
4948 KB |
Output is correct |
30 |
Correct |
3 ms |
4308 KB |
Output is correct |
31 |
Correct |
3 ms |
4436 KB |
Output is correct |
32 |
Correct |
3 ms |
4308 KB |
Output is correct |
33 |
Correct |
6 ms |
5652 KB |
Output is correct |
34 |
Correct |
6 ms |
5620 KB |
Output is correct |
35 |
Correct |
19 ms |
7508 KB |
Output is correct |
36 |
Correct |
4 ms |
4564 KB |
Output is correct |
37 |
Correct |
22 ms |
7904 KB |
Output is correct |
38 |
Correct |
26 ms |
8788 KB |
Output is correct |
39 |
Correct |
26 ms |
8608 KB |
Output is correct |
40 |
Correct |
24 ms |
8660 KB |
Output is correct |
41 |
Correct |
25 ms |
8720 KB |
Output is correct |
42 |
Correct |
7 ms |
4384 KB |
Output is correct |
43 |
Correct |
6 ms |
4436 KB |
Output is correct |
44 |
Correct |
7 ms |
4448 KB |
Output is correct |
45 |
Correct |
30 ms |
11852 KB |
Output is correct |
46 |
Correct |
31 ms |
11756 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3796 KB |
Output is correct |
2 |
Correct |
2 ms |
3796 KB |
Output is correct |
3 |
Correct |
2 ms |
3796 KB |
Output is correct |
4 |
Correct |
3 ms |
3796 KB |
Output is correct |
5 |
Correct |
2 ms |
3796 KB |
Output is correct |
6 |
Correct |
2 ms |
3796 KB |
Output is correct |
7 |
Correct |
2 ms |
3796 KB |
Output is correct |
8 |
Correct |
2 ms |
3796 KB |
Output is correct |
9 |
Correct |
2 ms |
3796 KB |
Output is correct |
10 |
Correct |
2 ms |
3796 KB |
Output is correct |
11 |
Correct |
4 ms |
4052 KB |
Output is correct |
12 |
Correct |
3 ms |
3796 KB |
Output is correct |
13 |
Correct |
2 ms |
3796 KB |
Output is correct |
14 |
Correct |
3 ms |
4052 KB |
Output is correct |
15 |
Correct |
3 ms |
4052 KB |
Output is correct |
16 |
Correct |
2 ms |
3924 KB |
Output is correct |
17 |
Correct |
3 ms |
4180 KB |
Output is correct |
18 |
Correct |
2 ms |
3924 KB |
Output is correct |
19 |
Correct |
2 ms |
3924 KB |
Output is correct |
20 |
Correct |
3 ms |
4052 KB |
Output is correct |
21 |
Correct |
2 ms |
3924 KB |
Output is correct |
22 |
Correct |
2 ms |
3924 KB |
Output is correct |
23 |
Correct |
3 ms |
4052 KB |
Output is correct |
24 |
Correct |
3 ms |
4180 KB |
Output is correct |
25 |
Correct |
3 ms |
4080 KB |
Output is correct |
26 |
Correct |
3 ms |
4052 KB |
Output is correct |
27 |
Correct |
3 ms |
3924 KB |
Output is correct |
28 |
Correct |
3 ms |
4308 KB |
Output is correct |
29 |
Correct |
5 ms |
4996 KB |
Output is correct |
30 |
Correct |
3 ms |
4304 KB |
Output is correct |
31 |
Correct |
4 ms |
4436 KB |
Output is correct |
32 |
Correct |
3 ms |
4336 KB |
Output is correct |
33 |
Correct |
6 ms |
5652 KB |
Output is correct |
34 |
Correct |
6 ms |
5620 KB |
Output is correct |
35 |
Correct |
30 ms |
7536 KB |
Output is correct |
36 |
Correct |
6 ms |
4564 KB |
Output is correct |
37 |
Correct |
32 ms |
7920 KB |
Output is correct |
38 |
Correct |
27 ms |
8740 KB |
Output is correct |
39 |
Correct |
37 ms |
8652 KB |
Output is correct |
40 |
Correct |
29 ms |
8632 KB |
Output is correct |
41 |
Correct |
43 ms |
8736 KB |
Output is correct |
42 |
Correct |
10 ms |
4396 KB |
Output is correct |
43 |
Correct |
12 ms |
4380 KB |
Output is correct |
44 |
Correct |
10 ms |
4508 KB |
Output is correct |
45 |
Correct |
30 ms |
11932 KB |
Output is correct |
46 |
Correct |
29 ms |
11828 KB |
Output is correct |
47 |
Correct |
42 ms |
16296 KB |
Output is correct |
48 |
Correct |
34 ms |
8840 KB |
Output is correct |
49 |
Correct |
17 ms |
7884 KB |
Output is correct |
50 |
Correct |
11 ms |
7124 KB |
Output is correct |
51 |
Correct |
38 ms |
11848 KB |
Output is correct |
52 |
Correct |
41 ms |
12248 KB |
Output is correct |
53 |
Correct |
18 ms |
8640 KB |
Output is correct |
54 |
Correct |
4 ms |
4756 KB |
Output is correct |
55 |
Correct |
5 ms |
5216 KB |
Output is correct |
56 |
Correct |
18 ms |
8176 KB |
Output is correct |
57 |
Correct |
16 ms |
13172 KB |
Output is correct |
58 |
Correct |
9 ms |
5772 KB |
Output is correct |
59 |
Correct |
10 ms |
5980 KB |
Output is correct |
60 |
Correct |
11 ms |
6560 KB |
Output is correct |
61 |
Correct |
11 ms |
6236 KB |
Output is correct |
62 |
Correct |
44 ms |
12296 KB |
Output is correct |
63 |
Correct |
92 ms |
33004 KB |
Output is correct |
64 |
Correct |
109 ms |
42012 KB |
Output is correct |
65 |
Correct |
125 ms |
55280 KB |
Output is correct |
66 |
Correct |
182 ms |
84476 KB |
Output is correct |
67 |
Correct |
169 ms |
83736 KB |
Output is correct |