oj.uz

Submission #786980

# Submission time Handle Problem Language Result Execution time Memory
786980 2023-07-18T16:02:44 Z winter0101 Xylophone (JOI18_xylophone) C++14
100 / 100
 56 ms 472 KB 
#include<bits/stdc++.h>
#include <xylophone.h>
#define fastio ios_base::sync_with_stdio(false);cin.tie(nullptr);
using namespace std;
int a[10009];
int pos[10009];
void solve(int n){
for (int i=1;i<=2*n;i++){
    pos[i]=0;
}
int l=1,r=n;
int pos1=1;
while (l<=r){
    int mid=(l+r)/2;
    int dd=query(mid,n);
    if (dd==n-1){
        l=mid+1;
        pos1=mid;
    }
    else {
        r=mid-1;
    }
}
a[pos1]=1;
pos[1]=1;
answer(pos1,1);
if (pos1<n){
a[pos1+1]=query(pos1,pos1+1)+1;
pos[a[pos1+1]]=1;
answer(pos1+1,a[pos1+1]);
for (int i=pos1+2;i<=n;i++){
    int d=query(i-1,i);
     if (a[i-1]+d>n||pos[a[i-1]+d]){
        a[i]=a[i-1]-d;
        pos[a[i]]=1;
        answer(i,a[i]);
     	continue;
     }
     if (a[i-1]-d<=0||pos[a[i-1]-d]){
     	a[i]=a[i-1]+d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     	continue;
     }
     int r=query(i-2,i);
     if (a[i-2]<a[i-1]){
     	if (a[i-1]+d==a[i-2]+r)a[i]=a[i-1]+d;
     	else a[i]=a[i-1]-d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     }
     else {
     	if (a[i-1]-d==a[i-2]-r)a[i]=a[i-1]-d;
     	else a[i]=a[i-1]+d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     }
}
}
if (pos1>1){
a[pos1-1]=query(pos1-1,pos1)+1;
pos[a[pos1-1]]=1;
answer(pos1-1,a[pos1-1]);
for (int i=pos1-2;i>=1;i--){
     int d=query(i,i+1);
     if (a[i+1]+d>n||pos[a[i+1]+d]){
        a[i]=a[i+1]-d;
        pos[a[i]]=1;
        answer(i,a[i]);
     	continue;
     }
     if (a[i+1]-d<=0||pos[a[i+1]-d]){
     	a[i]=a[i+1]+d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     	continue;
     }
     int r=query(i,i+2);
     if (a[i+2]<a[i+1]){
     	if (a[i+1]+d==a[i+2]+r)a[i]=a[i+1]+d;
     	else a[i]=a[i+1]-d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     }
     else {
     	if (a[i+1]-d==a[i+2]-r)a[i]=a[i+1]-d;
     	else a[i]=a[i+1]+d;
     	pos[a[i]]=1;
     	answer(i,a[i]);
     }
}
}   
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 2 ms 208 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 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 7 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Correct 5 ms 324 KB Output is correct
20 Correct 9 ms 208 KB Output is correct
21 Correct 10 ms 208 KB Output is correct
22 Correct 9 ms 320 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 7 ms 208 KB Output is correct
25 Correct 8 ms 208 KB Output is correct
26 Correct 8 ms 208 KB Output is correct
27 Correct 9 ms 208 KB Output is correct
28 Correct 11 ms 320 KB Output is correct
29 Correct 11 ms 208 KB Output is correct
30 Correct 10 ms 316 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 2 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 2 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 7 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Correct 5 ms 324 KB Output is correct
20 Correct 9 ms 208 KB Output is correct
21 Correct 10 ms 208 KB Output is correct
22 Correct 9 ms 320 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 7 ms 208 KB Output is correct
25 Correct 8 ms 208 KB Output is correct
26 Correct 8 ms 208 KB Output is correct
27 Correct 9 ms 208 KB Output is correct
28 Correct 11 ms 320 KB Output is correct
29 Correct 11 ms 208 KB Output is correct
30 Correct 10 ms 316 KB Output is correct
31 Correct 18 ms 332 KB Output is correct
32 Correct 31 ms 208 KB Output is correct
33 Correct 25 ms 336 KB Output is correct
34 Correct 56 ms 352 KB Output is correct
35 Correct 55 ms 336 KB Output is correct
36 Correct 42 ms 344 KB Output is correct
37 Correct 42 ms 356 KB Output is correct
38 Correct 35 ms 352 KB Output is correct
39 Correct 39 ms 336 KB Output is correct
40 Correct 39 ms 348 KB Output is correct
41 Correct 55 ms 336 KB Output is correct
42 Correct 44 ms 344 KB Output is correct
43 Correct 29 ms 472 KB Output is correct
44 Correct 34 ms 344 KB Output is correct
45 Correct 45 ms 340 KB Output is correct
46 Correct 38 ms 336 KB Output is correct
47 Correct 45 ms 464 KB Output is correct
48 Correct 42 ms 336 KB Output is correct
49 Correct 44 ms 336 KB Output is correct
50 Correct 26 ms 336 KB Output is correct
51 Correct 48 ms 336 KB Output is correct
52 Correct 47 ms 336 KB Output is correct
53 Correct 48 ms 348 KB Output is correct
54 Correct 33 ms 464 KB Output is correct
55 Correct 49 ms 348 KB Output is correct
56 Correct 44 ms 340 KB Output is correct
57 Correct 49 ms 344 KB Output is correct
58 Correct 55 ms 344 KB Output is correct
59 Correct 31 ms 352 KB Output is correct
60 Correct 40 ms 348 KB Output is correct