#include "jumps.h"
#ifndef EVAL
#include "stub.cpp"
#endif
#include "bits/stdc++.h"
using namespace std;
const int B = 700;
const int N = 2e5 + 5;
const int lg = 18;
vector<int> edges[N];
int mx[N][lg], mn[N][lg], h[N], pos[N];
int st[N][lg], pre[N];
int lx[N], rx[N];
struct ST{
int tree[N << 2], b;
void build(int lx = 0, int rx = N - 1, int x = 1){
if(lx == rx) { tree[x] = pre[lx]; return; }
int m = (lx + rx) >> 1;
build(lx, m, x << 1);
build(m + 1, rx, x << 1 | 1);
tree[x] = min(tree[x<<1], tree[x<<1 | 1]);
}
int get(int l, int r, int lx = 0, int rx = N - 1, int x = 1){
if(lx > r || rx < l) return N;
if(lx >= l && rx <= r) return tree[x];
int m = (lx + rx) >> 1;
return min(get(l, r, lx, m, x<<1), get(l, r, m+1, rx, x<<1|1));
}
}tree[N/B];
void init(int n, vector<int> H){
for(int i=0;i<n;i++){
h[i] = H[i];
pos[h[i]] = i;
st[i][0] = h[i];
}
vector<int> ss;
for(int i=0;i<n;i++){
while(!ss.empty() && h[ss.back()] < h[i]) ss.pop_back();
if(!ss.empty()) lx[i] = ss.back();
else lx[i] = n;
ss.push_back(i);
} ss.clear();
for(int i=n-1;~i;i--){
while(!ss.empty() && h[ss.back()] < h[i]) ss.pop_back();
if(!ss.empty()) rx[i] = ss.back();
else rx[i] = n;
ss.push_back(i);
} ss.clear();
h[n] = N;
for(int i=0;i<n;i++){
if(h[lx[i]] < h[rx[i]]){
swap(lx[i], rx[i]);
}
edges[lx[i]].push_back(i);
edges[rx[i]].push_back(i);
mn[i][0] = rx[i];
mx[i][0] = lx[i];
lx[i] = min(lx[i], rx[i]);
if(i < lx[i]) lx[i] = -1;
}
mn[n][0] = mx[n][0] = n;
edges[n].clear();
for(int b=0;b<n/B;b++){
memset(pre, 127, sizeof pre);
queue<int> q;
for(int i=0;b * B + i<n;i++){
q.push(b * B + i);
pre[b * B + i] = 0;
}
while(!q.empty()){
int u = q.front(); q.pop();
for(auto x : edges[u]){
if(pre[x] > pre[u] + 1){
pre[x] = pre[u] + 1;
q.push(x);
}
}
}
tree[b].build();
}
for(int j=1;j<lg;j++){
for(int i=0;i<=n;i++){
if(i + (1 << (j - 1)) < n) st[i][j] = max(st[i][j - 1], st[i + (1 << (j - 1))][j-1]);
mn[i][j] = mn[mn[i][j-1]][j-1];
mx[i][j] = mx[mx[i][j-1]][j-1];
}
}
}
int get(int l, int r){
int lg = __lg(r - l + 1);
return max(st[l][lg], st[r - (1 << lg) + 1][lg]);
}
int check(int a, int c){
int res = 0;
for(int i=lg-1;~i;i--){
if(h[mx[a][i]] <= h[c]){
//~ cout<<mx[a][i]<<" "<<h[mx[a][i]]<<" "<<h[c]<<"\n";
//~ cout<<i<<"\n";
a = mx[a][i], res += (1 << i);
}
}
for(int i=lg-1;~i;i--){
if(h[mn[a][i]] <= h[c]){
//~ cout<<mx[a][i]<<" "<<h[mx[a][i]]<<" "<<h[c]<<"\n";
a = mn[a][i], res += (1 << i);
}
}
if(a != c) return N;
return res;
}
int minimum_jumps(int a, int b, int c, int d) {
int bl = c / B, br = d / B;
int res = N;
for(int j=bl+1;j<br;j++){
//~ assert(false);
res = min(res, tree[j].get(a, b));
}
auto calc = [&](int l, int r){
for(int i=l;i<=r;i++){
int L = max(lx[i] + 1, a);
if(L <= b){
int mx = pos[get(L, b)];
res = min(res, check(mx, i));
}
}
};
if(bl == br){
calc(c, d);
} else {
if(c % B == 0) res = min(res, tree[bl].get(a, b));
else calc(c, (bl + 1) * B - 1);
if((d + 1) % B == 0) res = min(res, tree[br].get(a, b));
else calc(br * B, d);
}
if(res == N) return -1;
return res;
}
/*
7 2
3 2 1 6 4 5 7
4 4 6 6
0 1 2 2
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4944 KB |
Output is correct |
2 |
Correct |
2 ms |
4944 KB |
Output is correct |
3 |
Correct |
1514 ms |
517284 KB |
Output is correct |
4 |
Execution timed out |
4098 ms |
647996 KB |
Time limit exceeded |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4944 KB |
Output is correct |
2 |
Correct |
3 ms |
4944 KB |
Output is correct |
3 |
Correct |
3 ms |
4944 KB |
Output is correct |
4 |
Correct |
3 ms |
4944 KB |
Output is correct |
5 |
Correct |
4 ms |
4944 KB |
Output is correct |
6 |
Correct |
4 ms |
5072 KB |
Output is correct |
7 |
Correct |
4 ms |
5072 KB |
Output is correct |
8 |
Correct |
4 ms |
5072 KB |
Output is correct |
9 |
Correct |
3 ms |
5072 KB |
Output is correct |
10 |
Correct |
5 ms |
5072 KB |
Output is correct |
11 |
Correct |
5 ms |
5072 KB |
Output is correct |
12 |
Correct |
5 ms |
5072 KB |
Output is correct |
13 |
Correct |
4 ms |
5072 KB |
Output is correct |
14 |
Correct |
5 ms |
5072 KB |
Output is correct |
15 |
Correct |
4 ms |
5072 KB |
Output is correct |
16 |
Correct |
7 ms |
5072 KB |
Output is correct |
17 |
Correct |
6 ms |
5072 KB |
Output is correct |
18 |
Correct |
3 ms |
4944 KB |
Output is correct |
19 |
Correct |
4 ms |
4944 KB |
Output is correct |
20 |
Correct |
5 ms |
5072 KB |
Output is correct |
21 |
Correct |
5 ms |
5072 KB |
Output is correct |
22 |
Correct |
4 ms |
5072 KB |
Output is correct |
23 |
Correct |
7 ms |
5072 KB |
Output is correct |
24 |
Correct |
6 ms |
5072 KB |
Output is correct |
25 |
Correct |
3 ms |
4944 KB |
Output is correct |
26 |
Correct |
3 ms |
5072 KB |
Output is correct |
27 |
Correct |
4 ms |
4944 KB |
Output is correct |
28 |
Correct |
4 ms |
5060 KB |
Output is correct |
29 |
Correct |
4 ms |
5072 KB |
Output is correct |
30 |
Correct |
4 ms |
5072 KB |
Output is correct |
31 |
Correct |
4 ms |
5072 KB |
Output is correct |
32 |
Correct |
5 ms |
5072 KB |
Output is correct |
33 |
Correct |
3 ms |
4944 KB |
Output is correct |
34 |
Correct |
3 ms |
5072 KB |
Output is correct |
35 |
Correct |
3 ms |
5072 KB |
Output is correct |
36 |
Correct |
3 ms |
5072 KB |
Output is correct |
37 |
Correct |
3 ms |
5072 KB |
Output is correct |
38 |
Correct |
3 ms |
5072 KB |
Output is correct |
39 |
Correct |
3 ms |
5072 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
4944 KB |
Output is correct |
2 |
Correct |
3 ms |
4944 KB |
Output is correct |
3 |
Correct |
3 ms |
4944 KB |
Output is correct |
4 |
Correct |
3 ms |
4944 KB |
Output is correct |
5 |
Correct |
4 ms |
4944 KB |
Output is correct |
6 |
Correct |
4 ms |
5072 KB |
Output is correct |
7 |
Correct |
4 ms |
5072 KB |
Output is correct |
8 |
Correct |
4 ms |
5072 KB |
Output is correct |
9 |
Correct |
3 ms |
5072 KB |
Output is correct |
10 |
Correct |
5 ms |
5072 KB |
Output is correct |
11 |
Correct |
5 ms |
5072 KB |
Output is correct |
12 |
Correct |
5 ms |
5072 KB |
Output is correct |
13 |
Correct |
4 ms |
5072 KB |
Output is correct |
14 |
Correct |
5 ms |
5072 KB |
Output is correct |
15 |
Correct |
4 ms |
5072 KB |
Output is correct |
16 |
Correct |
7 ms |
5072 KB |
Output is correct |
17 |
Correct |
6 ms |
5072 KB |
Output is correct |
18 |
Correct |
3 ms |
4944 KB |
Output is correct |
19 |
Correct |
4 ms |
4944 KB |
Output is correct |
20 |
Correct |
5 ms |
5072 KB |
Output is correct |
21 |
Correct |
5 ms |
5072 KB |
Output is correct |
22 |
Correct |
4 ms |
5072 KB |
Output is correct |
23 |
Correct |
7 ms |
5072 KB |
Output is correct |
24 |
Correct |
6 ms |
5072 KB |
Output is correct |
25 |
Correct |
3 ms |
4944 KB |
Output is correct |
26 |
Correct |
3 ms |
5072 KB |
Output is correct |
27 |
Correct |
4 ms |
4944 KB |
Output is correct |
28 |
Correct |
4 ms |
5060 KB |
Output is correct |
29 |
Correct |
4 ms |
5072 KB |
Output is correct |
30 |
Correct |
4 ms |
5072 KB |
Output is correct |
31 |
Correct |
4 ms |
5072 KB |
Output is correct |
32 |
Correct |
5 ms |
5072 KB |
Output is correct |
33 |
Correct |
3 ms |
4944 KB |
Output is correct |
34 |
Correct |
3 ms |
5072 KB |
Output is correct |
35 |
Correct |
3 ms |
5072 KB |
Output is correct |
36 |
Correct |
3 ms |
5072 KB |
Output is correct |
37 |
Correct |
3 ms |
5072 KB |
Output is correct |
38 |
Correct |
3 ms |
5072 KB |
Output is correct |
39 |
Correct |
3 ms |
5072 KB |
Output is correct |
40 |
Correct |
3 ms |
4944 KB |
Output is correct |
41 |
Correct |
3 ms |
4944 KB |
Output is correct |
42 |
Correct |
3 ms |
4944 KB |
Output is correct |
43 |
Correct |
3 ms |
4944 KB |
Output is correct |
44 |
Correct |
4 ms |
4952 KB |
Output is correct |
45 |
Correct |
5 ms |
5072 KB |
Output is correct |
46 |
Correct |
5 ms |
5072 KB |
Output is correct |
47 |
Correct |
5 ms |
5072 KB |
Output is correct |
48 |
Correct |
4 ms |
5072 KB |
Output is correct |
49 |
Correct |
5 ms |
5072 KB |
Output is correct |
50 |
Correct |
5 ms |
5072 KB |
Output is correct |
51 |
Correct |
5 ms |
5068 KB |
Output is correct |
52 |
Correct |
5 ms |
5072 KB |
Output is correct |
53 |
Correct |
4 ms |
5072 KB |
Output is correct |
54 |
Correct |
6 ms |
5072 KB |
Output is correct |
55 |
Correct |
7 ms |
5072 KB |
Output is correct |
56 |
Correct |
5 ms |
5072 KB |
Output is correct |
57 |
Correct |
3 ms |
5072 KB |
Output is correct |
58 |
Correct |
18 ms |
10320 KB |
Output is correct |
59 |
Correct |
24 ms |
10448 KB |
Output is correct |
60 |
Correct |
10 ms |
8072 KB |
Output is correct |
61 |
Correct |
24 ms |
10448 KB |
Output is correct |
62 |
Correct |
14 ms |
5072 KB |
Output is correct |
63 |
Incorrect |
26 ms |
10448 KB |
Output isn't correct |
64 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
4944 KB |
Output is correct |
2 |
Correct |
3 ms |
4944 KB |
Output is correct |
3 |
Correct |
3 ms |
4944 KB |
Output is correct |
4 |
Correct |
3 ms |
4944 KB |
Output is correct |
5 |
Correct |
1049 ms |
519204 KB |
Output is correct |
6 |
Correct |
1194 ms |
644140 KB |
Output is correct |
7 |
Correct |
385 ms |
333156 KB |
Output is correct |
8 |
Incorrect |
1622 ms |
644544 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
5028 KB |
Output is correct |
2 |
Correct |
3 ms |
4944 KB |
Output is correct |
3 |
Correct |
3 ms |
4944 KB |
Output is correct |
4 |
Correct |
526 ms |
297252 KB |
Output is correct |
5 |
Correct |
2126 ms |
644796 KB |
Output is correct |
6 |
Correct |
520 ms |
111168 KB |
Output is correct |
7 |
Correct |
1867 ms |
644780 KB |
Output is correct |
8 |
Correct |
606 ms |
225332 KB |
Output is correct |
9 |
Correct |
1743 ms |
644588 KB |
Output is correct |
10 |
Correct |
1744 ms |
648024 KB |
Output is correct |
11 |
Correct |
1512 ms |
647932 KB |
Output is correct |
12 |
Correct |
1702 ms |
647936 KB |
Output is correct |
13 |
Correct |
1804 ms |
644824 KB |
Output is correct |
14 |
Correct |
1710 ms |
646680 KB |
Output is correct |
15 |
Correct |
1417 ms |
647956 KB |
Output is correct |
16 |
Correct |
1361 ms |
647920 KB |
Output is correct |
17 |
Correct |
3 ms |
4944 KB |
Output is correct |
18 |
Correct |
3 ms |
4944 KB |
Output is correct |
19 |
Correct |
4 ms |
4944 KB |
Output is correct |
20 |
Correct |
5 ms |
5092 KB |
Output is correct |
21 |
Correct |
5 ms |
5072 KB |
Output is correct |
22 |
Correct |
5 ms |
5072 KB |
Output is correct |
23 |
Correct |
5 ms |
5072 KB |
Output is correct |
24 |
Correct |
5 ms |
5072 KB |
Output is correct |
25 |
Correct |
3 ms |
5072 KB |
Output is correct |
26 |
Correct |
8 ms |
8016 KB |
Output is correct |
27 |
Correct |
26 ms |
10448 KB |
Output is correct |
28 |
Correct |
29 ms |
10444 KB |
Output is correct |
29 |
Correct |
21 ms |
10448 KB |
Output is correct |
30 |
Correct |
20 ms |
10448 KB |
Output is correct |
31 |
Correct |
27 ms |
10448 KB |
Output is correct |
32 |
Correct |
2 ms |
4944 KB |
Output is correct |
33 |
Correct |
488 ms |
375616 KB |
Output is correct |
34 |
Correct |
1109 ms |
644416 KB |
Output is correct |
35 |
Correct |
886 ms |
647852 KB |
Output is correct |
36 |
Correct |
1509 ms |
645028 KB |
Output is correct |
37 |
Correct |
867 ms |
646680 KB |
Output is correct |
38 |
Correct |
638 ms |
648048 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
5028 KB |
Output is correct |
2 |
Correct |
3 ms |
4944 KB |
Output is correct |
3 |
Correct |
3 ms |
4944 KB |
Output is correct |
4 |
Correct |
526 ms |
297252 KB |
Output is correct |
5 |
Correct |
2126 ms |
644796 KB |
Output is correct |
6 |
Correct |
520 ms |
111168 KB |
Output is correct |
7 |
Correct |
1867 ms |
644780 KB |
Output is correct |
8 |
Correct |
606 ms |
225332 KB |
Output is correct |
9 |
Correct |
1743 ms |
644588 KB |
Output is correct |
10 |
Correct |
1744 ms |
648024 KB |
Output is correct |
11 |
Correct |
1512 ms |
647932 KB |
Output is correct |
12 |
Correct |
1702 ms |
647936 KB |
Output is correct |
13 |
Correct |
1804 ms |
644824 KB |
Output is correct |
14 |
Correct |
1710 ms |
646680 KB |
Output is correct |
15 |
Correct |
1417 ms |
647956 KB |
Output is correct |
16 |
Correct |
1361 ms |
647920 KB |
Output is correct |
17 |
Correct |
3 ms |
4944 KB |
Output is correct |
18 |
Correct |
3 ms |
4944 KB |
Output is correct |
19 |
Correct |
4 ms |
4944 KB |
Output is correct |
20 |
Correct |
5 ms |
5092 KB |
Output is correct |
21 |
Correct |
5 ms |
5072 KB |
Output is correct |
22 |
Correct |
5 ms |
5072 KB |
Output is correct |
23 |
Correct |
5 ms |
5072 KB |
Output is correct |
24 |
Correct |
5 ms |
5072 KB |
Output is correct |
25 |
Correct |
3 ms |
5072 KB |
Output is correct |
26 |
Correct |
8 ms |
8016 KB |
Output is correct |
27 |
Correct |
26 ms |
10448 KB |
Output is correct |
28 |
Correct |
29 ms |
10444 KB |
Output is correct |
29 |
Correct |
21 ms |
10448 KB |
Output is correct |
30 |
Correct |
20 ms |
10448 KB |
Output is correct |
31 |
Correct |
27 ms |
10448 KB |
Output is correct |
32 |
Correct |
2 ms |
4944 KB |
Output is correct |
33 |
Correct |
488 ms |
375616 KB |
Output is correct |
34 |
Correct |
1109 ms |
644416 KB |
Output is correct |
35 |
Correct |
886 ms |
647852 KB |
Output is correct |
36 |
Correct |
1509 ms |
645028 KB |
Output is correct |
37 |
Correct |
867 ms |
646680 KB |
Output is correct |
38 |
Correct |
638 ms |
648048 KB |
Output is correct |
39 |
Correct |
3 ms |
4944 KB |
Output is correct |
40 |
Correct |
3 ms |
5016 KB |
Output is correct |
41 |
Correct |
4 ms |
4944 KB |
Output is correct |
42 |
Correct |
590 ms |
297060 KB |
Output is correct |
43 |
Correct |
2047 ms |
644700 KB |
Output is correct |
44 |
Correct |
627 ms |
111148 KB |
Output is correct |
45 |
Correct |
1732 ms |
644720 KB |
Output is correct |
46 |
Correct |
680 ms |
225400 KB |
Output is correct |
47 |
Correct |
1888 ms |
644432 KB |
Output is correct |
48 |
Correct |
1798 ms |
648064 KB |
Output is correct |
49 |
Correct |
1846 ms |
648096 KB |
Output is correct |
50 |
Correct |
1724 ms |
647928 KB |
Output is correct |
51 |
Correct |
1963 ms |
644788 KB |
Output is correct |
52 |
Correct |
1875 ms |
646764 KB |
Output is correct |
53 |
Correct |
1548 ms |
647936 KB |
Output is correct |
54 |
Correct |
1455 ms |
647924 KB |
Output is correct |
55 |
Correct |
3 ms |
4944 KB |
Output is correct |
56 |
Correct |
1589 ms |
641892 KB |
Output is correct |
57 |
Correct |
2250 ms |
644092 KB |
Output is correct |
58 |
Correct |
612 ms |
117820 KB |
Output is correct |
59 |
Correct |
2027 ms |
644728 KB |
Output is correct |
60 |
Correct |
700 ms |
232180 KB |
Output is correct |
61 |
Correct |
2294 ms |
644072 KB |
Output is correct |
62 |
Correct |
1956 ms |
647952 KB |
Output is correct |
63 |
Correct |
2017 ms |
647688 KB |
Output is correct |
64 |
Correct |
2000 ms |
647416 KB |
Output is correct |
65 |
Correct |
2242 ms |
644852 KB |
Output is correct |
66 |
Correct |
1838 ms |
646744 KB |
Output is correct |
67 |
Correct |
1791 ms |
647948 KB |
Output is correct |
68 |
Correct |
1627 ms |
647944 KB |
Output is correct |
69 |
Correct |
3 ms |
4944 KB |
Output is correct |
70 |
Correct |
3 ms |
4944 KB |
Output is correct |
71 |
Correct |
4 ms |
5044 KB |
Output is correct |
72 |
Correct |
5 ms |
5072 KB |
Output is correct |
73 |
Correct |
4 ms |
5072 KB |
Output is correct |
74 |
Correct |
6 ms |
5040 KB |
Output is correct |
75 |
Correct |
5 ms |
5072 KB |
Output is correct |
76 |
Correct |
3 ms |
5028 KB |
Output is correct |
77 |
Correct |
3 ms |
4944 KB |
Output is correct |
78 |
Correct |
4 ms |
4944 KB |
Output is correct |
79 |
Correct |
6 ms |
5088 KB |
Output is correct |
80 |
Correct |
5 ms |
5072 KB |
Output is correct |
81 |
Correct |
6 ms |
5120 KB |
Output is correct |
82 |
Correct |
6 ms |
5072 KB |
Output is correct |
83 |
Correct |
6 ms |
5072 KB |
Output is correct |
84 |
Correct |
4 ms |
5032 KB |
Output is correct |
85 |
Correct |
5 ms |
5072 KB |
Output is correct |
86 |
Correct |
20 ms |
10412 KB |
Output is correct |
87 |
Correct |
29 ms |
10420 KB |
Output is correct |
88 |
Correct |
33 ms |
10448 KB |
Output is correct |
89 |
Correct |
25 ms |
10392 KB |
Output is correct |
90 |
Correct |
38 ms |
10448 KB |
Output is correct |
91 |
Correct |
4 ms |
5072 KB |
Output is correct |
92 |
Correct |
9 ms |
8016 KB |
Output is correct |
93 |
Correct |
24 ms |
10448 KB |
Output is correct |
94 |
Correct |
34 ms |
10432 KB |
Output is correct |
95 |
Correct |
26 ms |
10448 KB |
Output is correct |
96 |
Correct |
19 ms |
10424 KB |
Output is correct |
97 |
Correct |
28 ms |
10448 KB |
Output is correct |
98 |
Correct |
3 ms |
4944 KB |
Output is correct |
99 |
Correct |
1745 ms |
644716 KB |
Output is correct |
100 |
Correct |
1309 ms |
644716 KB |
Output is correct |
101 |
Correct |
1102 ms |
647744 KB |
Output is correct |
102 |
Correct |
1577 ms |
644364 KB |
Output is correct |
103 |
Correct |
1127 ms |
646708 KB |
Output is correct |
104 |
Correct |
793 ms |
647956 KB |
Output is correct |
105 |
Correct |
5 ms |
4944 KB |
Output is correct |
106 |
Correct |
613 ms |
375580 KB |
Output is correct |
107 |
Correct |
1482 ms |
644344 KB |
Output is correct |
108 |
Correct |
1029 ms |
647812 KB |
Output is correct |
109 |
Correct |
1925 ms |
644980 KB |
Output is correct |
110 |
Correct |
1192 ms |
646764 KB |
Output is correct |
111 |
Correct |
849 ms |
647952 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4944 KB |
Output is correct |
2 |
Correct |
2 ms |
4944 KB |
Output is correct |
3 |
Correct |
1514 ms |
517284 KB |
Output is correct |
4 |
Execution timed out |
4098 ms |
647996 KB |
Time limit exceeded |
5 |
Halted |
0 ms |
0 KB |
- |