#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <sstream>
#include <map>
#include <stack>
#include <set>
#include <queue>
#include <list>
#include <unordered_set>
#include <unordered_map>
#include <math.h>
#include <bitset>
#include <cmath>
#include <vector>
#include <iomanip>
#include <random>
#include <chrono>
#include <cassert>
using namespace std;
#define ll long long
#define fr first
#define sc second
#define pb push_back
#define US freopen(".in", "r", stdin); freopen("j.out", "w", stdout);
ll gcd(ll a, ll b)
{
if (a == 0 || b == 0) {
return max(a, b);
}
if (a <= b) {
return gcd(a, b % a);
}
else {
return gcd(a % b, b);
}
}
ll lcm(ll a, ll b) {
return (a / gcd(a, b)) * b;
}
const int N = 200005;
const ll oo = 100000000000000000, MOD = 1000000007;
ll s[N], f[N], dp[N];
int n, m;
char pat[N], ans[N];
int func(int ind, ll l, ll r) {
while (f[ind] >= l && f[ind] <= r && ind<=m) {
++ind;
}
--ind;
return ind;
}
int func1(int ind, ll l, ll r,ll l1,ll r1) {
while (ind<=m) {
if ((f[ind] >= l && f[ind] <= r) || (f[ind] >= l1 && f[ind] <= r1)) {
++ind;
}
else {
break;
}
}
--ind;
return ind;
}
bool from[N][5];
void solve() {
cin >> n >> m;
for (int i = 1; i <= n; ++i) {
cin >> s[i];
}
for (int i = 1; i <= m; ++i) {
cin >> f[i];
}
ll l = 0, r = 10000000000, anss = oo;
while (l <= r) {
ll mid = (l + r) / 2;
dp[0] = 0;
for (int i = 1; i <= n; ++i) {
dp[i] = 0;
for (int j = 0; j < 3; ++j) {
from[i][j] = 0;
}
}
for (int i = 0; i <= n-1; ++i) {
int ind = dp[i];
++ind;
ind = func(ind, s[i+1] - mid, s[i+1]);
if (ind > dp[i + 1]) {
dp[i + 1] = ind;
for (int j = 0; j < 3; ++j) {
from[i + 1][j] = 0;
}
from[i + 1][0] = 1;
ans[i + 1] = 'L';
}
ind = dp[i];
++ind;
ind = func(ind, s[i+1], s[i+1] + mid);
if (ind > dp[i + 1]) {
dp[i + 1] = ind;
for (int j = 0; j < 3; ++j) {
from[i + 1][j] = 0;
}
from[i + 1][1] = 1;
ans[i + 1] = 'R';
}
ind = dp[i] + 1;
ind = func1(ind, s[i+1], s[i+1] + mid, s[i + 2] - mid, s[i + 2]);
if (ind > dp[i + 2]) {
for (int j = 0; j < 3; ++j) {
from[i + 2][j] = 0;
}
from[i + 2][2] = 1;
ans[i + 1] = 'R';
dp[i + 2] = ind;
ans[i + 2] = 'L';
}
}
if (dp[n] == m) {
for (int i = n; i >= 1; --i) {
if (from[i][0] == 1) {
pat[i] = 'L';
}
else {
if (from[i][1] == 1) {
pat[i] = 'R';
}
else {
pat[i] = 'L';
pat[i - 1] = 'R';
--i;
}
}
}
anss = min(anss, mid);
r = mid - 1;
}
else {
l = mid + 1;
}
}
if (anss == oo) {
cout << -1 << endl;
return;
}
cout << anss << endl;
for (int i = 1; i <= n; ++i) {
cout << pat[i];
}
}
int main() {
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
//US
int tt = 1;
//cin >> tt;
while (tt--) {
solve();
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Correct |
2 |
Correct |
1 ms |
4564 KB |
Correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4564 KB |
Correct |
2 |
Correct |
6 ms |
5212 KB |
Correct |
3 |
Correct |
0 ms |
4444 KB |
Correct |
4 |
Correct |
7 ms |
5448 KB |
Correct |
5 |
Correct |
7 ms |
5468 KB |
Correct |
6 |
Correct |
1 ms |
4444 KB |
Correct |
7 |
Correct |
0 ms |
4444 KB |
Correct |
8 |
Correct |
2 ms |
4700 KB |
Correct |
9 |
Correct |
1 ms |
4444 KB |
Correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Correct |
2 |
Correct |
13 ms |
5344 KB |
Correct |
3 |
Correct |
5 ms |
4700 KB |
Correct |
4 |
Correct |
46 ms |
7512 KB |
Correct |
5 |
Correct |
45 ms |
7508 KB |
Correct |
6 |
Correct |
1 ms |
4440 KB |
Correct |
7 |
Correct |
1 ms |
4444 KB |
Correct |
8 |
Correct |
33 ms |
7508 KB |
Correct |
9 |
Correct |
33 ms |
7468 KB |
Correct |
10 |
Correct |
37 ms |
7504 KB |
Correct |
11 |
Correct |
25 ms |
6496 KB |
Correct |
12 |
Correct |
23 ms |
6236 KB |
Correct |
13 |
Correct |
36 ms |
6492 KB |
Correct |
14 |
Correct |
37 ms |
6800 KB |
Correct |
15 |
Correct |
42 ms |
6800 KB |
Correct |
16 |
Correct |
36 ms |
6492 KB |
Correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Correct |
2 |
Correct |
1 ms |
4564 KB |
Correct |
3 |
Correct |
1 ms |
4440 KB |
Correct |
4 |
Correct |
0 ms |
4444 KB |
Correct |
5 |
Correct |
1 ms |
4444 KB |
Correct |
6 |
Correct |
0 ms |
4444 KB |
Correct |
7 |
Correct |
1 ms |
4444 KB |
Correct |
8 |
Correct |
1 ms |
4444 KB |
Correct |
9 |
Correct |
1 ms |
4444 KB |
Correct |
10 |
Correct |
1 ms |
4444 KB |
Correct |
11 |
Correct |
1 ms |
4444 KB |
Correct |
12 |
Correct |
0 ms |
4444 KB |
Correct |
13 |
Correct |
0 ms |
4444 KB |
Correct |
14 |
Correct |
0 ms |
4572 KB |
Correct |
15 |
Correct |
1 ms |
4444 KB |
Correct |
16 |
Correct |
0 ms |
4444 KB |
Correct |
17 |
Correct |
1 ms |
4444 KB |
Correct |
18 |
Correct |
1 ms |
4444 KB |
Correct |
19 |
Correct |
1 ms |
4444 KB |
Correct |
20 |
Correct |
1 ms |
4444 KB |
Correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Correct |
2 |
Correct |
15 ms |
5724 KB |
Correct |
3 |
Correct |
62 ms |
7456 KB |
Correct |
4 |
Correct |
67 ms |
7456 KB |
Correct |
5 |
Correct |
74 ms |
7504 KB |
Correct |
6 |
Correct |
62 ms |
7504 KB |
Correct |
7 |
Correct |
65 ms |
7460 KB |
Correct |
8 |
Correct |
65 ms |
7440 KB |
Correct |
9 |
Correct |
61 ms |
7456 KB |
Correct |
10 |
Correct |
60 ms |
7504 KB |
Correct |
11 |
Correct |
60 ms |
7504 KB |
Correct |
12 |
Correct |
1 ms |
4444 KB |
Correct |
13 |
Correct |
1 ms |
4444 KB |
Correct |
14 |
Correct |
40 ms |
6492 KB |
Correct |
15 |
Correct |
26 ms |
6492 KB |
Correct |
16 |
Correct |
27 ms |
6492 KB |
Correct |
17 |
Correct |
30 ms |
5980 KB |
Correct |
18 |
Correct |
30 ms |
6328 KB |
Correct |
19 |
Correct |
34 ms |
6480 KB |
Correct |
20 |
Correct |
52 ms |
7004 KB |
Correct |
21 |
Correct |
56 ms |
7072 KB |
Correct |
22 |
Correct |
49 ms |
6876 KB |
Correct |
23 |
Correct |
54 ms |
6744 KB |
Correct |
24 |
Correct |
47 ms |
6740 KB |
Correct |
25 |
Correct |
53 ms |
6708 KB |
Correct |
26 |
Correct |
28 ms |
6236 KB |
Correct |
27 |
Correct |
21 ms |
5724 KB |
Correct |
28 |
Correct |
43 ms |
6492 KB |
Correct |
29 |
Correct |
40 ms |
6492 KB |
Correct |
30 |
Correct |
50 ms |
6544 KB |
Correct |
31 |
Correct |
41 ms |
6680 KB |
Correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Correct |
2 |
Correct |
1 ms |
4564 KB |
Correct |
3 |
Correct |
6 ms |
5212 KB |
Correct |
4 |
Correct |
0 ms |
4444 KB |
Correct |
5 |
Correct |
7 ms |
5448 KB |
Correct |
6 |
Correct |
7 ms |
5468 KB |
Correct |
7 |
Correct |
1 ms |
4444 KB |
Correct |
8 |
Correct |
0 ms |
4444 KB |
Correct |
9 |
Correct |
2 ms |
4700 KB |
Correct |
10 |
Correct |
1 ms |
4444 KB |
Correct |
11 |
Correct |
13 ms |
5344 KB |
Correct |
12 |
Correct |
5 ms |
4700 KB |
Correct |
13 |
Correct |
46 ms |
7512 KB |
Correct |
14 |
Correct |
45 ms |
7508 KB |
Correct |
15 |
Correct |
1 ms |
4440 KB |
Correct |
16 |
Correct |
1 ms |
4444 KB |
Correct |
17 |
Correct |
33 ms |
7508 KB |
Correct |
18 |
Correct |
33 ms |
7468 KB |
Correct |
19 |
Correct |
37 ms |
7504 KB |
Correct |
20 |
Correct |
25 ms |
6496 KB |
Correct |
21 |
Correct |
23 ms |
6236 KB |
Correct |
22 |
Correct |
36 ms |
6492 KB |
Correct |
23 |
Correct |
37 ms |
6800 KB |
Correct |
24 |
Correct |
42 ms |
6800 KB |
Correct |
25 |
Correct |
36 ms |
6492 KB |
Correct |
26 |
Correct |
1 ms |
4440 KB |
Correct |
27 |
Correct |
0 ms |
4444 KB |
Correct |
28 |
Correct |
1 ms |
4444 KB |
Correct |
29 |
Correct |
0 ms |
4444 KB |
Correct |
30 |
Correct |
1 ms |
4444 KB |
Correct |
31 |
Correct |
1 ms |
4444 KB |
Correct |
32 |
Correct |
1 ms |
4444 KB |
Correct |
33 |
Correct |
1 ms |
4444 KB |
Correct |
34 |
Correct |
1 ms |
4444 KB |
Correct |
35 |
Correct |
0 ms |
4444 KB |
Correct |
36 |
Correct |
0 ms |
4444 KB |
Correct |
37 |
Correct |
0 ms |
4572 KB |
Correct |
38 |
Correct |
1 ms |
4444 KB |
Correct |
39 |
Correct |
0 ms |
4444 KB |
Correct |
40 |
Correct |
1 ms |
4444 KB |
Correct |
41 |
Correct |
1 ms |
4444 KB |
Correct |
42 |
Correct |
1 ms |
4444 KB |
Correct |
43 |
Correct |
1 ms |
4444 KB |
Correct |
44 |
Correct |
15 ms |
5724 KB |
Correct |
45 |
Correct |
62 ms |
7456 KB |
Correct |
46 |
Correct |
67 ms |
7456 KB |
Correct |
47 |
Correct |
74 ms |
7504 KB |
Correct |
48 |
Correct |
62 ms |
7504 KB |
Correct |
49 |
Correct |
65 ms |
7460 KB |
Correct |
50 |
Correct |
65 ms |
7440 KB |
Correct |
51 |
Correct |
61 ms |
7456 KB |
Correct |
52 |
Correct |
60 ms |
7504 KB |
Correct |
53 |
Correct |
60 ms |
7504 KB |
Correct |
54 |
Correct |
1 ms |
4444 KB |
Correct |
55 |
Correct |
1 ms |
4444 KB |
Correct |
56 |
Correct |
40 ms |
6492 KB |
Correct |
57 |
Correct |
26 ms |
6492 KB |
Correct |
58 |
Correct |
27 ms |
6492 KB |
Correct |
59 |
Correct |
30 ms |
5980 KB |
Correct |
60 |
Correct |
30 ms |
6328 KB |
Correct |
61 |
Correct |
34 ms |
6480 KB |
Correct |
62 |
Correct |
52 ms |
7004 KB |
Correct |
63 |
Correct |
56 ms |
7072 KB |
Correct |
64 |
Correct |
49 ms |
6876 KB |
Correct |
65 |
Correct |
54 ms |
6744 KB |
Correct |
66 |
Correct |
47 ms |
6740 KB |
Correct |
67 |
Correct |
53 ms |
6708 KB |
Correct |
68 |
Correct |
28 ms |
6236 KB |
Correct |
69 |
Correct |
21 ms |
5724 KB |
Correct |
70 |
Correct |
43 ms |
6492 KB |
Correct |
71 |
Correct |
40 ms |
6492 KB |
Correct |
72 |
Correct |
50 ms |
6544 KB |
Correct |
73 |
Correct |
41 ms |
6680 KB |
Correct |
74 |
Correct |
11 ms |
5464 KB |
Correct |
75 |
Correct |
58 ms |
7460 KB |
Correct |
76 |
Correct |
61 ms |
7508 KB |
Correct |
77 |
Correct |
1 ms |
4440 KB |
Correct |
78 |
Correct |
33 ms |
7488 KB |
Correct |
79 |
Correct |
38 ms |
7508 KB |
Correct |
80 |
Correct |
31 ms |
7484 KB |
Correct |
81 |
Correct |
26 ms |
6492 KB |
Correct |
82 |
Correct |
28 ms |
6492 KB |
Correct |
83 |
Correct |
26 ms |
6488 KB |
Correct |
84 |
Correct |
8 ms |
5208 KB |
Correct |
85 |
Correct |
53 ms |
7060 KB |
Correct |
86 |
Correct |
47 ms |
6996 KB |
Correct |
87 |
Correct |
37 ms |
6492 KB |
Correct |
88 |
Correct |
10 ms |
5456 KB |
Correct |
89 |
Correct |
10 ms |
5464 KB |
Correct |