#include "xylophone.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 5e3 + 5;
int res[N + 1];
bool check[N + 1];
void solve(int n) {
int l = 1,r = n,tr;
int pos;
while(l < r) {
int mid = (l + r)/2;
if(query(mid,n) >= n - 1) {
l = mid + 1;
pos = mid;
} else {
r = mid;
}
}
res[pos] = 1;
check[1] = true;
for(int i = pos - 1;i >= 1;i--) {
int w = query(i,i + 1);
if(res[i + 1] + w > n) {
res[i] = res[i + 1] - w;
continue;
}
if(res[i + 1] <= w) {
res[i] = res[i + 1] + w;
continue;
}
if(check[res[i + 1] - w]) {
res[i] = res[i + 1] + w;
continue;
}
if(check[res[i + 1] + w]) {
res[i] = res[i + 1] - w;
continue;
}
vector<int> st = {res[i + 1],res[i + 2]};
sort(st.begin(),st.end());
int asd = query(i,i + 2);
if(asd == st[1] - st[0]) {
if(res[i + 1] == st[0]) {
res[i] = res[i + 1] + w;
} else {
res[i] = res[i + 1] - w;
}
} else {
if(asd == w) {
if(res[i + 1] == st[0]) {
res[i] = res[i + 1] + w;
} else {
res[i] = res[i + 1] - w;
}
} else {
if(res[i + 2] == st[0]) {
res[i] = res[i + 2] + asd;
} else {
res[i] = res[i + 2] - asd;
}
}
}
check[res[i]] = true;
}
for(int i = pos + 1;i <= n;i++) {
int w = query(i - 1,i);
if(res[i - 1] <= w) {
res[i] = res[i - 1] + w;
continue;
}
if(res[i - 1] + w > n) {
res[i] = res[i - 1] - w;
continue;
}
if(check[res[i - 1] + w]) {
res[i] = res[i - 1] - w;
continue;
}
if(check[res[i - 1] - w]) {
res[i] = res[i - 1] + w;
continue;
}
vector<int> st = {res[i - 1],res[i - 2]};
sort(st.begin(),st.end());
int asd = query(i - 2,i);
if(asd == st[1] - st[0]) {
if(res[i - 1] == st[0]) {
res[i] = res[i - 1] + w;
} else {
res[i] = res[i - 1] - w;
}
} else {
if(asd == w) {
if(res[i - 1] == st[0]) {
res[i] = res[i - 1] + w;
} else {
res[i] = res[i - 1] - w;
}
} else {
if(res[i - 2] == st[0]) {
res[i] = res[i - 2] + asd;
} else {
res[i] = res[i - 2] - asd;
}
}
}
check[res[i]] = true;
}
for(int i = 1;i <= n;i++) {
answer(i,res[i]);
}
return;
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:12:18: warning: unused variable 'tr' [-Wunused-variable]
12 | int l = 1,r = n,tr;
| ^~
xylophone.cpp:13:6: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
13 | int pos;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
1 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
3 ms |
208 KB |
Output is correct |
| 6 |
Correct |
2 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
2 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
208 KB |
Output is correct |
| 11 |
Correct |
2 ms |
208 KB |
Output is correct |
| 12 |
Correct |
2 ms |
208 KB |
Output is correct |
| 13 |
Correct |
3 ms |
208 KB |
Output is correct |
| 14 |
Correct |
2 ms |
208 KB |
Output is correct |
| 15 |
Correct |
2 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
1 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
3 ms |
208 KB |
Output is correct |
| 6 |
Correct |
2 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
2 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
208 KB |
Output is correct |
| 11 |
Correct |
2 ms |
208 KB |
Output is correct |
| 12 |
Correct |
2 ms |
208 KB |
Output is correct |
| 13 |
Correct |
3 ms |
208 KB |
Output is correct |
| 14 |
Correct |
2 ms |
208 KB |
Output is correct |
| 15 |
Correct |
2 ms |
208 KB |
Output is correct |
| 16 |
Correct |
3 ms |
208 KB |
Output is correct |
| 17 |
Correct |
5 ms |
308 KB |
Output is correct |
| 18 |
Correct |
12 ms |
208 KB |
Output is correct |
| 19 |
Correct |
15 ms |
208 KB |
Output is correct |
| 20 |
Correct |
15 ms |
308 KB |
Output is correct |
| 21 |
Correct |
12 ms |
208 KB |
Output is correct |
| 22 |
Correct |
14 ms |
208 KB |
Output is correct |
| 23 |
Correct |
12 ms |
304 KB |
Output is correct |
| 24 |
Correct |
17 ms |
304 KB |
Output is correct |
| 25 |
Correct |
14 ms |
308 KB |
Output is correct |
| 26 |
Correct |
18 ms |
316 KB |
Output is correct |
| 27 |
Correct |
16 ms |
308 KB |
Output is correct |
| 28 |
Correct |
13 ms |
208 KB |
Output is correct |
| 29 |
Correct |
11 ms |
312 KB |
Output is correct |
| 30 |
Correct |
10 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
1 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
3 ms |
208 KB |
Output is correct |
| 6 |
Correct |
2 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
2 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
208 KB |
Output is correct |
| 11 |
Correct |
2 ms |
208 KB |
Output is correct |
| 12 |
Correct |
2 ms |
208 KB |
Output is correct |
| 13 |
Correct |
3 ms |
208 KB |
Output is correct |
| 14 |
Correct |
2 ms |
208 KB |
Output is correct |
| 15 |
Correct |
2 ms |
208 KB |
Output is correct |
| 16 |
Correct |
3 ms |
208 KB |
Output is correct |
| 17 |
Correct |
5 ms |
308 KB |
Output is correct |
| 18 |
Correct |
12 ms |
208 KB |
Output is correct |
| 19 |
Correct |
15 ms |
208 KB |
Output is correct |
| 20 |
Correct |
15 ms |
308 KB |
Output is correct |
| 21 |
Correct |
12 ms |
208 KB |
Output is correct |
| 22 |
Correct |
14 ms |
208 KB |
Output is correct |
| 23 |
Correct |
12 ms |
304 KB |
Output is correct |
| 24 |
Correct |
17 ms |
304 KB |
Output is correct |
| 25 |
Correct |
14 ms |
308 KB |
Output is correct |
| 26 |
Correct |
18 ms |
316 KB |
Output is correct |
| 27 |
Correct |
16 ms |
308 KB |
Output is correct |
| 28 |
Correct |
13 ms |
208 KB |
Output is correct |
| 29 |
Correct |
11 ms |
312 KB |
Output is correct |
| 30 |
Correct |
10 ms |
208 KB |
Output is correct |
| 31 |
Correct |
25 ms |
308 KB |
Output is correct |
| 32 |
Correct |
41 ms |
300 KB |
Output is correct |
| 33 |
Correct |
54 ms |
296 KB |
Output is correct |
| 34 |
Correct |
56 ms |
300 KB |
Output is correct |
| 35 |
Correct |
64 ms |
312 KB |
Output is correct |
| 36 |
Correct |
68 ms |
308 KB |
Output is correct |
| 37 |
Correct |
50 ms |
300 KB |
Output is correct |
| 38 |
Correct |
39 ms |
296 KB |
Output is correct |
| 39 |
Correct |
71 ms |
420 KB |
Output is correct |
| 40 |
Correct |
30 ms |
308 KB |
Output is correct |
| 41 |
Correct |
57 ms |
304 KB |
Output is correct |
| 42 |
Correct |
63 ms |
304 KB |
Output is correct |
| 43 |
Correct |
24 ms |
308 KB |
Output is correct |
| 44 |
Correct |
65 ms |
328 KB |
Output is correct |
| 45 |
Correct |
86 ms |
304 KB |
Output is correct |
| 46 |
Correct |
65 ms |
428 KB |
Output is correct |
| 47 |
Correct |
78 ms |
420 KB |
Output is correct |
| 48 |
Correct |
38 ms |
300 KB |
Output is correct |
| 49 |
Correct |
65 ms |
300 KB |
Output is correct |
| 50 |
Correct |
66 ms |
300 KB |
Output is correct |
| 51 |
Correct |
29 ms |
308 KB |
Output is correct |
| 52 |
Correct |
31 ms |
312 KB |
Output is correct |
| 53 |
Correct |
59 ms |
328 KB |
Output is correct |
| 54 |
Correct |
58 ms |
424 KB |
Output is correct |
| 55 |
Correct |
65 ms |
304 KB |
Output is correct |
| 56 |
Correct |
58 ms |
304 KB |
Output is correct |
| 57 |
Correct |
52 ms |
304 KB |
Output is correct |
| 58 |
Correct |
50 ms |
300 KB |
Output is correct |
| 59 |
Correct |
60 ms |
316 KB |
Output is correct |
| 60 |
Correct |
59 ms |
312 KB |
Output is correct |
