#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define ll long long
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
using namespace std;
const int MAXN = 3e4+10;
const double SMALL = 1e-6;
const ll INF = 1e18+10;
const int MOD = 1e9+7;
typedef pair<int,int> pii;
typedef pair<ll, pii> ipii;
bitset <MAXN> ma[MAXN];
int b[MAXN], p[MAXN];
bitset <MAXN> vis;
unordered_map <int, ll> tot[MAXN];
vector <int> ed[MAXN];
int n, m;
priority_queue <ipii, vector<ipii>, greater<ipii>> pq;
void dji(){
tot[b[0]][p[0]] = -INF;
pq.push(ipii(-INF, pii(b[0], p[0])));
while(!pq.empty()){
ll dis = pq.top().fi; int nw = pq.top().se.fi; int jump = pq.top().se.se;
//cout << dis << ' ' << nw << ' ' << jump << "p\n";
pq.pop();
if(dis != tot[nw][jump]) continue;
if(!vis[nw]){
vis[nw] = 1;
for(auto nx : ed[nw]){ // ke k lain
if(tot[nw][nx] > dis){ //gk nambah lompat
tot[nw][nx] = dis;
pq.push(ipii(dis, pii(nw, nx)));
}
}
}
if(nw-jump >= 0 && tot[nw-jump][jump] > dis+1){
tot[nw-jump][jump] = dis+1;
pq.push(ipii(dis+1, pii(nw-jump, jump)));
}
if(nw+jump <= n-1 && tot[nw+jump][jump] > dis+1){
tot[nw+jump][jump] = dis+1;
pq.push(ipii(dis+1, pii(nw+jump, jump)));
}
}
ll ans = INF;
for(int i=1; i<=30000; i++) ans = min(ans, tot[b[1]][i]+INF);
if(ans != INF) cout << ans << '\n';
else cout << "-1\n";
}
signed main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
for(int i=0; i<=m-1; i++){
cin >> b[i] >> p[i];
}
for(int i=0; i<=m-1; i++){
if(ma[b[i]][p[i]] == 1) continue;
ma[b[i]][p[i]] = 1;
ed[b[i]].pb(p[i]);
}
dji();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3888 KB |
Output is correct |
2 |
Correct |
3 ms |
3888 KB |
Output is correct |
3 |
Correct |
3 ms |
3888 KB |
Output is correct |
4 |
Correct |
3 ms |
3888 KB |
Output is correct |
5 |
Correct |
3 ms |
3888 KB |
Output is correct |
6 |
Correct |
3 ms |
3888 KB |
Output is correct |
7 |
Correct |
3 ms |
3888 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3888 KB |
Output is correct |
2 |
Correct |
3 ms |
3888 KB |
Output is correct |
3 |
Correct |
3 ms |
3888 KB |
Output is correct |
4 |
Correct |
3 ms |
3888 KB |
Output is correct |
5 |
Correct |
3 ms |
3888 KB |
Output is correct |
6 |
Correct |
3 ms |
3888 KB |
Output is correct |
7 |
Correct |
3 ms |
3888 KB |
Output is correct |
8 |
Correct |
3 ms |
4016 KB |
Output is correct |
9 |
Correct |
3 ms |
4016 KB |
Output is correct |
10 |
Correct |
3 ms |
4400 KB |
Output is correct |
11 |
Correct |
5 ms |
4456 KB |
Output is correct |
12 |
Correct |
3 ms |
4016 KB |
Output is correct |
13 |
Correct |
3 ms |
4272 KB |
Output is correct |
14 |
Correct |
4 ms |
4528 KB |
Output is correct |
15 |
Correct |
4 ms |
4528 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
3888 KB |
Output is correct |
2 |
Correct |
3 ms |
3888 KB |
Output is correct |
3 |
Correct |
3 ms |
3888 KB |
Output is correct |
4 |
Correct |
3 ms |
3888 KB |
Output is correct |
5 |
Correct |
3 ms |
3888 KB |
Output is correct |
6 |
Correct |
3 ms |
3888 KB |
Output is correct |
7 |
Correct |
3 ms |
3888 KB |
Output is correct |
8 |
Correct |
3 ms |
4016 KB |
Output is correct |
9 |
Correct |
3 ms |
4052 KB |
Output is correct |
10 |
Correct |
3 ms |
4400 KB |
Output is correct |
11 |
Correct |
4 ms |
4528 KB |
Output is correct |
12 |
Correct |
3 ms |
4016 KB |
Output is correct |
13 |
Correct |
3 ms |
4272 KB |
Output is correct |
14 |
Correct |
4 ms |
4528 KB |
Output is correct |
15 |
Correct |
4 ms |
4528 KB |
Output is correct |
16 |
Correct |
4 ms |
4656 KB |
Output is correct |
17 |
Correct |
8 ms |
7216 KB |
Output is correct |
18 |
Correct |
5 ms |
6960 KB |
Output is correct |
19 |
Correct |
4 ms |
5852 KB |
Output is correct |
20 |
Correct |
8 ms |
11568 KB |
Output is correct |
21 |
Correct |
4 ms |
5296 KB |
Output is correct |
22 |
Correct |
4 ms |
6192 KB |
Output is correct |
23 |
Correct |
6 ms |
7088 KB |
Output is correct |
24 |
Correct |
11 ms |
9136 KB |
Output is correct |
25 |
Correct |
10 ms |
9244 KB |
Output is correct |
26 |
Correct |
5 ms |
4656 KB |
Output is correct |
27 |
Correct |
4 ms |
4528 KB |
Output is correct |
28 |
Correct |
10 ms |
12336 KB |
Output is correct |
29 |
Correct |
14 ms |
6832 KB |
Output is correct |
30 |
Correct |
5 ms |
4784 KB |
Output is correct |
31 |
Correct |
9 ms |
5572 KB |
Output is correct |
32 |
Correct |
6 ms |
5028 KB |
Output is correct |
33 |
Correct |
26 ms |
9648 KB |
Output is correct |
34 |
Correct |
26 ms |
9648 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3888 KB |
Output is correct |
2 |
Correct |
3 ms |
3888 KB |
Output is correct |
3 |
Correct |
3 ms |
3888 KB |
Output is correct |
4 |
Correct |
3 ms |
3888 KB |
Output is correct |
5 |
Correct |
3 ms |
3888 KB |
Output is correct |
6 |
Correct |
4 ms |
3888 KB |
Output is correct |
7 |
Correct |
3 ms |
3888 KB |
Output is correct |
8 |
Correct |
3 ms |
4016 KB |
Output is correct |
9 |
Correct |
3 ms |
4016 KB |
Output is correct |
10 |
Correct |
4 ms |
4400 KB |
Output is correct |
11 |
Correct |
4 ms |
4528 KB |
Output is correct |
12 |
Correct |
3 ms |
4016 KB |
Output is correct |
13 |
Correct |
3 ms |
4272 KB |
Output is correct |
14 |
Correct |
4 ms |
4528 KB |
Output is correct |
15 |
Correct |
4 ms |
4528 KB |
Output is correct |
16 |
Correct |
4 ms |
4656 KB |
Output is correct |
17 |
Correct |
9 ms |
7216 KB |
Output is correct |
18 |
Correct |
5 ms |
6960 KB |
Output is correct |
19 |
Correct |
4 ms |
5808 KB |
Output is correct |
20 |
Correct |
7 ms |
11568 KB |
Output is correct |
21 |
Correct |
4 ms |
5296 KB |
Output is correct |
22 |
Correct |
4 ms |
6192 KB |
Output is correct |
23 |
Correct |
6 ms |
7088 KB |
Output is correct |
24 |
Correct |
8 ms |
9136 KB |
Output is correct |
25 |
Correct |
7 ms |
9264 KB |
Output is correct |
26 |
Correct |
4 ms |
4656 KB |
Output is correct |
27 |
Correct |
4 ms |
4528 KB |
Output is correct |
28 |
Correct |
10 ms |
12392 KB |
Output is correct |
29 |
Correct |
14 ms |
6848 KB |
Output is correct |
30 |
Correct |
7 ms |
4764 KB |
Output is correct |
31 |
Correct |
9 ms |
5680 KB |
Output is correct |
32 |
Correct |
6 ms |
5040 KB |
Output is correct |
33 |
Correct |
25 ms |
9648 KB |
Output is correct |
34 |
Correct |
34 ms |
9636 KB |
Output is correct |
35 |
Correct |
36 ms |
14392 KB |
Output is correct |
36 |
Correct |
9 ms |
8752 KB |
Output is correct |
37 |
Correct |
56 ms |
18988 KB |
Output is correct |
38 |
Correct |
54 ms |
19128 KB |
Output is correct |
39 |
Correct |
60 ms |
19080 KB |
Output is correct |
40 |
Correct |
56 ms |
19124 KB |
Output is correct |
41 |
Correct |
57 ms |
19156 KB |
Output is correct |
42 |
Correct |
7 ms |
4912 KB |
Output is correct |
43 |
Correct |
7 ms |
4740 KB |
Output is correct |
44 |
Correct |
10 ms |
11824 KB |
Output is correct |
45 |
Correct |
110 ms |
24788 KB |
Output is correct |
46 |
Correct |
110 ms |
24820 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
3888 KB |
Output is correct |
2 |
Correct |
3 ms |
3888 KB |
Output is correct |
3 |
Correct |
3 ms |
3888 KB |
Output is correct |
4 |
Correct |
3 ms |
3888 KB |
Output is correct |
5 |
Correct |
3 ms |
3888 KB |
Output is correct |
6 |
Correct |
3 ms |
3948 KB |
Output is correct |
7 |
Correct |
3 ms |
3888 KB |
Output is correct |
8 |
Correct |
3 ms |
4016 KB |
Output is correct |
9 |
Correct |
3 ms |
4016 KB |
Output is correct |
10 |
Correct |
3 ms |
4400 KB |
Output is correct |
11 |
Correct |
4 ms |
4528 KB |
Output is correct |
12 |
Correct |
3 ms |
4016 KB |
Output is correct |
13 |
Correct |
3 ms |
4272 KB |
Output is correct |
14 |
Correct |
4 ms |
4528 KB |
Output is correct |
15 |
Correct |
4 ms |
4528 KB |
Output is correct |
16 |
Correct |
3 ms |
4656 KB |
Output is correct |
17 |
Correct |
7 ms |
7216 KB |
Output is correct |
18 |
Correct |
4 ms |
6960 KB |
Output is correct |
19 |
Correct |
4 ms |
5808 KB |
Output is correct |
20 |
Correct |
7 ms |
11568 KB |
Output is correct |
21 |
Correct |
4 ms |
5352 KB |
Output is correct |
22 |
Correct |
5 ms |
6192 KB |
Output is correct |
23 |
Correct |
7 ms |
7088 KB |
Output is correct |
24 |
Correct |
12 ms |
9128 KB |
Output is correct |
25 |
Correct |
7 ms |
9264 KB |
Output is correct |
26 |
Correct |
6 ms |
4692 KB |
Output is correct |
27 |
Correct |
4 ms |
4528 KB |
Output is correct |
28 |
Correct |
15 ms |
12396 KB |
Output is correct |
29 |
Correct |
17 ms |
6836 KB |
Output is correct |
30 |
Correct |
5 ms |
4784 KB |
Output is correct |
31 |
Correct |
13 ms |
5680 KB |
Output is correct |
32 |
Correct |
6 ms |
5040 KB |
Output is correct |
33 |
Correct |
27 ms |
9620 KB |
Output is correct |
34 |
Correct |
25 ms |
9656 KB |
Output is correct |
35 |
Correct |
36 ms |
14380 KB |
Output is correct |
36 |
Correct |
10 ms |
8752 KB |
Output is correct |
37 |
Correct |
65 ms |
18988 KB |
Output is correct |
38 |
Correct |
77 ms |
19116 KB |
Output is correct |
39 |
Correct |
58 ms |
19108 KB |
Output is correct |
40 |
Correct |
54 ms |
19136 KB |
Output is correct |
41 |
Correct |
56 ms |
19120 KB |
Output is correct |
42 |
Correct |
7 ms |
4912 KB |
Output is correct |
43 |
Correct |
6 ms |
4784 KB |
Output is correct |
44 |
Correct |
10 ms |
11852 KB |
Output is correct |
45 |
Correct |
118 ms |
24832 KB |
Output is correct |
46 |
Correct |
110 ms |
24784 KB |
Output is correct |
47 |
Correct |
420 ms |
77244 KB |
Output is correct |
48 |
Correct |
48 ms |
59944 KB |
Output is correct |
49 |
Correct |
50 ms |
60180 KB |
Output is correct |
50 |
Correct |
29 ms |
49544 KB |
Output is correct |
51 |
Correct |
143 ms |
91828 KB |
Output is correct |
52 |
Correct |
139 ms |
93240 KB |
Output is correct |
53 |
Correct |
68 ms |
83476 KB |
Output is correct |
54 |
Correct |
5 ms |
6064 KB |
Output is correct |
55 |
Correct |
6 ms |
6832 KB |
Output is correct |
56 |
Correct |
70 ms |
119412 KB |
Output is correct |
57 |
Correct |
140 ms |
33844 KB |
Output is correct |
58 |
Correct |
16 ms |
9520 KB |
Output is correct |
59 |
Correct |
17 ms |
10616 KB |
Output is correct |
60 |
Correct |
23 ms |
12420 KB |
Output is correct |
61 |
Correct |
26 ms |
12568 KB |
Output is correct |
62 |
Correct |
162 ms |
136384 KB |
Output is correct |
63 |
Execution timed out |
1091 ms |
94708 KB |
Time limit exceeded |
64 |
Halted |
0 ms |
0 KB |
- |