#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define bug cout << "bug" << endl
#define speed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define all(x) x.begin(), x.end()
#define F first
#define S second
#define pll pair <ll, ll>
#define pii pair <int, int>
#define triple pair <pair <ll, ll> , ll>
#define ull unsigned long long
#define ld long double
#define pinode pair <node*, node*>
const ll INF = 9e18 + 5;
const ll inf = 1e9 + 5;
const ll N = 2e3 + 5;
const ll shift = 2e6;
const ll mod = 998244353;
const ll mod2 = 1e9 + 9;
const ll M = 1e3 + 5;
const ll LOG = 21;
const ll sp = 263;
const ll sp2 = 9973;
const int block = 100;
const double eps = 1e-10;
ll n, m, b[N], p[N], d[N];
vector <pii> g[N];
int main(){
speed;
cin >> n >> m;
for(int i = 0; i < m; i++){
cin >> b[i] >> p[i];
}
for(int i = 0; i < m; i++){
if(i == 1)
continue;
for(int j = 0; j < m; j++){
if(abs(b[i] - b[j]) % p[i] == 0){
g[i].pb({j, abs(b[i] - b[j]) / p[i]});
}
}
}
for(int i = 0; i < m; i++){
d[i] = INF;
}
set <pii> st;
st.insert({0, 0});
d[0] = 0;
while(st.size()){
ll v = st.begin() -> second, len = st.begin() -> first;
st.erase(st.begin());
for(auto to : g[v]){
if(d[v] + to.S < d[to.F]){
st.erase({d[to.F], to.F});
d[to.F] = d[v] + to.S;
st.insert({d[to.F], to.F});
}
}
}
if(d[1] == INF)
d[1] = -1;
cout << d[1] << endl;
}
/*
%I64d6
6 1 3
8 1 2 1 5 4
%I64d
*/
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:57:32: warning: unused variable 'len' [-Wunused-variable]
57 | ll v = st.begin() -> second, len = st.begin() -> first;
| ^~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
376 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
372 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
380 KB |
Output is correct |
4 |
Correct |
1 ms |
376 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
468 KB |
Output is correct |
11 |
Correct |
28 ms |
2508 KB |
Output is correct |
12 |
Correct |
81 ms |
32276 KB |
Output is correct |
13 |
Correct |
65 ms |
32524 KB |
Output is correct |
14 |
Correct |
26 ms |
1840 KB |
Output is correct |
15 |
Correct |
24 ms |
1864 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
376 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
368 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
468 KB |
Output is correct |
11 |
Correct |
25 ms |
2620 KB |
Output is correct |
12 |
Correct |
64 ms |
32328 KB |
Output is correct |
13 |
Correct |
62 ms |
32580 KB |
Output is correct |
14 |
Correct |
25 ms |
1788 KB |
Output is correct |
15 |
Correct |
26 ms |
1828 KB |
Output is correct |
16 |
Correct |
5 ms |
640 KB |
Output is correct |
17 |
Correct |
18 ms |
1044 KB |
Output is correct |
18 |
Correct |
5 ms |
468 KB |
Output is correct |
19 |
Correct |
3 ms |
376 KB |
Output is correct |
20 |
Correct |
74 ms |
32528 KB |
Output is correct |
21 |
Correct |
8 ms |
516 KB |
Output is correct |
22 |
Correct |
4 ms |
384 KB |
Output is correct |
23 |
Correct |
6 ms |
468 KB |
Output is correct |
24 |
Correct |
21 ms |
596 KB |
Output is correct |
25 |
Correct |
24 ms |
520 KB |
Output is correct |
26 |
Correct |
58 ms |
29536 KB |
Output is correct |
27 |
Correct |
64 ms |
30392 KB |
Output is correct |
28 |
Correct |
23 ms |
588 KB |
Output is correct |
29 |
Correct |
5 ms |
596 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
3 ms |
500 KB |
Output is correct |
32 |
Correct |
2 ms |
468 KB |
Output is correct |
33 |
Correct |
26 ms |
1860 KB |
Output is correct |
34 |
Correct |
23 ms |
1780 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
376 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
404 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
468 KB |
Output is correct |
11 |
Correct |
24 ms |
2508 KB |
Output is correct |
12 |
Correct |
62 ms |
32304 KB |
Output is correct |
13 |
Correct |
57 ms |
32508 KB |
Output is correct |
14 |
Correct |
30 ms |
1768 KB |
Output is correct |
15 |
Correct |
24 ms |
1876 KB |
Output is correct |
16 |
Correct |
5 ms |
596 KB |
Output is correct |
17 |
Correct |
19 ms |
1100 KB |
Output is correct |
18 |
Correct |
7 ms |
468 KB |
Output is correct |
19 |
Correct |
2 ms |
384 KB |
Output is correct |
20 |
Correct |
70 ms |
32588 KB |
Output is correct |
21 |
Correct |
8 ms |
468 KB |
Output is correct |
22 |
Correct |
4 ms |
340 KB |
Output is correct |
23 |
Correct |
7 ms |
500 KB |
Output is correct |
24 |
Correct |
22 ms |
628 KB |
Output is correct |
25 |
Correct |
23 ms |
484 KB |
Output is correct |
26 |
Correct |
72 ms |
29576 KB |
Output is correct |
27 |
Correct |
66 ms |
30324 KB |
Output is correct |
28 |
Correct |
22 ms |
600 KB |
Output is correct |
29 |
Correct |
5 ms |
684 KB |
Output is correct |
30 |
Correct |
2 ms |
340 KB |
Output is correct |
31 |
Correct |
3 ms |
468 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
26 ms |
1836 KB |
Output is correct |
34 |
Correct |
30 ms |
1892 KB |
Output is correct |
35 |
Incorrect |
6 ms |
468 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
428 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
376 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
2 ms |
468 KB |
Output is correct |
11 |
Correct |
30 ms |
2508 KB |
Output is correct |
12 |
Correct |
60 ms |
32284 KB |
Output is correct |
13 |
Correct |
66 ms |
32492 KB |
Output is correct |
14 |
Correct |
26 ms |
1868 KB |
Output is correct |
15 |
Correct |
28 ms |
1880 KB |
Output is correct |
16 |
Correct |
6 ms |
632 KB |
Output is correct |
17 |
Correct |
26 ms |
1100 KB |
Output is correct |
18 |
Correct |
6 ms |
464 KB |
Output is correct |
19 |
Correct |
3 ms |
340 KB |
Output is correct |
20 |
Correct |
70 ms |
32584 KB |
Output is correct |
21 |
Correct |
7 ms |
512 KB |
Output is correct |
22 |
Correct |
4 ms |
432 KB |
Output is correct |
23 |
Correct |
6 ms |
488 KB |
Output is correct |
24 |
Correct |
21 ms |
596 KB |
Output is correct |
25 |
Correct |
21 ms |
520 KB |
Output is correct |
26 |
Correct |
58 ms |
29508 KB |
Output is correct |
27 |
Correct |
57 ms |
30400 KB |
Output is correct |
28 |
Correct |
20 ms |
588 KB |
Output is correct |
29 |
Correct |
4 ms |
596 KB |
Output is correct |
30 |
Correct |
1 ms |
376 KB |
Output is correct |
31 |
Correct |
3 ms |
504 KB |
Output is correct |
32 |
Correct |
2 ms |
468 KB |
Output is correct |
33 |
Correct |
23 ms |
1796 KB |
Output is correct |
34 |
Correct |
28 ms |
1796 KB |
Output is correct |
35 |
Incorrect |
6 ms |
560 KB |
Output isn't correct |
36 |
Halted |
0 ms |
0 KB |
- |