#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("Ofast,unroll-loops")
#define ll long long
#define all(x) x.begin(), x.end()
#define ld long double
#define pii pair<int, int>
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int INF = 1e9 + 7;
const int MAXN = 1e5 + 5;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
// ifstream cin("input.txt");
// ofstream cout("output.txt");
int n, m;
cin >> n >> m;
vector<int> b(m);
vector<int> p(m);
vector<int> d(n, INF);
vector<vector<int> > g(n);
for(int i = 0; i < m; i++){
cin >> b[i] >> p[i];
g[b[i]].push_back(p[i]);
}
d[b[0]] = 0;
set<pair<int, int> > s;
s.insert({0, b[0]});
while(!s.empty()){
int cv = s.begin() -> second;
int cd = s.begin() -> first;
s.erase(s.begin());
for(auto i: g[cv]){
int cx = cv;
int cy = 0;
while(cx >= 0){
if(cd + cy < d[cx]){
s.erase({d[cx], cx});
d[cx] = cd + cy;
s.insert({d[cx], cx});
}
cx -= i;
cy++;
}
cx = cv;
cy = 0;
while(cx < n){
if(cd + cy < d[cx]){
s.erase({d[cx], cx});
d[cx] = cd + cy;
s.insert({d[cx], cx});
}
cx += i;
cy++;
}
}
}
if(d[b[1]] == INF){
cout << "-1" << endl;
}
else{
cout << d[b[1]] << endl;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
452 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
456 KB |
Output is correct |
5 |
Correct |
0 ms |
456 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
2 ms |
344 KB |
Output is correct |
16 |
Correct |
1 ms |
344 KB |
Output is correct |
17 |
Correct |
1 ms |
548 KB |
Output is correct |
18 |
Correct |
1 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
360 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
2 ms |
604 KB |
Output is correct |
25 |
Correct |
2 ms |
604 KB |
Output is correct |
26 |
Correct |
3 ms |
348 KB |
Output is correct |
27 |
Correct |
3 ms |
604 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
3 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
600 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
4 ms |
604 KB |
Output is correct |
34 |
Correct |
5 ms |
640 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
460 KB |
Output is correct |
20 |
Correct |
4 ms |
600 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
2 ms |
604 KB |
Output is correct |
25 |
Correct |
2 ms |
604 KB |
Output is correct |
26 |
Correct |
4 ms |
464 KB |
Output is correct |
27 |
Correct |
3 ms |
604 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
3 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
456 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
3 ms |
600 KB |
Output is correct |
34 |
Correct |
3 ms |
604 KB |
Output is correct |
35 |
Correct |
5 ms |
1120 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
5 ms |
860 KB |
Output is correct |
38 |
Correct |
8 ms |
1112 KB |
Output is correct |
39 |
Correct |
6 ms |
1116 KB |
Output is correct |
40 |
Correct |
7 ms |
1112 KB |
Output is correct |
41 |
Correct |
6 ms |
1116 KB |
Output is correct |
42 |
Correct |
38 ms |
1116 KB |
Output is correct |
43 |
Correct |
38 ms |
1116 KB |
Output is correct |
44 |
Correct |
39 ms |
1196 KB |
Output is correct |
45 |
Correct |
6 ms |
1112 KB |
Output is correct |
46 |
Correct |
6 ms |
1116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
2 ms |
388 KB |
Output is correct |
25 |
Correct |
1 ms |
600 KB |
Output is correct |
26 |
Correct |
4 ms |
344 KB |
Output is correct |
27 |
Correct |
3 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
3 ms |
600 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
4 ms |
604 KB |
Output is correct |
34 |
Correct |
4 ms |
604 KB |
Output is correct |
35 |
Correct |
6 ms |
1116 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
5 ms |
956 KB |
Output is correct |
38 |
Correct |
8 ms |
1116 KB |
Output is correct |
39 |
Correct |
6 ms |
1116 KB |
Output is correct |
40 |
Correct |
7 ms |
1116 KB |
Output is correct |
41 |
Correct |
6 ms |
1116 KB |
Output is correct |
42 |
Correct |
39 ms |
1112 KB |
Output is correct |
43 |
Correct |
39 ms |
1112 KB |
Output is correct |
44 |
Correct |
39 ms |
1196 KB |
Output is correct |
45 |
Correct |
7 ms |
1112 KB |
Output is correct |
46 |
Correct |
8 ms |
1140 KB |
Output is correct |
47 |
Correct |
20 ms |
2156 KB |
Output is correct |
48 |
Correct |
5 ms |
1736 KB |
Output is correct |
49 |
Correct |
5 ms |
1896 KB |
Output is correct |
50 |
Correct |
4 ms |
1628 KB |
Output is correct |
51 |
Correct |
40 ms |
3676 KB |
Output is correct |
52 |
Correct |
34 ms |
3420 KB |
Output is correct |
53 |
Correct |
14 ms |
3676 KB |
Output is correct |
54 |
Correct |
4 ms |
1884 KB |
Output is correct |
55 |
Correct |
4 ms |
1884 KB |
Output is correct |
56 |
Correct |
545 ms |
4080 KB |
Output is correct |
57 |
Correct |
70 ms |
2720 KB |
Output is correct |
58 |
Correct |
539 ms |
2644 KB |
Output is correct |
59 |
Correct |
526 ms |
2556 KB |
Output is correct |
60 |
Correct |
523 ms |
2548 KB |
Output is correct |
61 |
Correct |
473 ms |
2592 KB |
Output is correct |
62 |
Correct |
9 ms |
2652 KB |
Output is correct |
63 |
Correct |
48 ms |
3304 KB |
Output is correct |
64 |
Correct |
49 ms |
3164 KB |
Output is correct |
65 |
Correct |
59 ms |
3160 KB |
Output is correct |
66 |
Correct |
88 ms |
3356 KB |
Output is correct |
67 |
Correct |
81 ms |
3164 KB |
Output is correct |