#include<bits/stdc++.h>
using namespace std;
int main(){
cin.tie(0)->sync_with_stdio(0);
int n,l,r,cur,la; cin >> n;
l = 1,r = n*2-1;
vector<int> ans;
set<int> used;
cin >> cur;
used.insert(cur);
ans.push_back(cur);
for (int i = 0;i<n-1;i++) {
la = cur; cin >> cur;
if (used.count(cur)){
if (cur == la){
while (used.count(l)) l++;
used.insert(l);
ans.push_back(l);
l++;
while (used.count(r)) r--;
used.insert(r);
ans.push_back(r);
r--;
}
else{
if (cur > la){
while (used.count(r)) r--;
used.insert(r);
ans.push_back(r);
r--;
while (used.count(r)) r--;
used.insert(r);
ans.push_back(r);
r--;
}
else{
while (used.count(l)) l++;
used.insert(l);
ans.push_back(l);
l++;
while (used.count(l)) l++;
used.insert(l);
ans.push_back(l);
l++;
}
}
}
else{
ans.push_back(cur);
used.insert(cur);
if (cur > la){
while (used.count(r)) r--;
used.insert(r);
ans.push_back(r);
r--;
}
else{
while (used.count(l)) l++;
used.insert(l);
ans.push_back(l);
l++;
}
}
}
for (auto a:ans) cout << a << ' ';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
324 KB |
Output is correct |
3 |
Correct |
1 ms |
316 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
320 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
324 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
2 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
468 KB |
Output is correct |
2 |
Correct |
4 ms |
724 KB |
Output is correct |
3 |
Correct |
7 ms |
1196 KB |
Output is correct |
4 |
Correct |
12 ms |
2252 KB |
Output is correct |
5 |
Correct |
23 ms |
4060 KB |
Output is correct |
6 |
Correct |
53 ms |
7984 KB |
Output is correct |
7 |
Correct |
72 ms |
12356 KB |
Output is correct |