CSES - Putka Open 2020 – 2/5 - Results
Submission details
Task:Kortit
Sender:Mahtimursu
Submission time:2020-09-25 18:05:55 +0300
Language:C++ (C++11)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED23
#2ACCEPTED77
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2details
#2ACCEPTED0.02 s2details

Code

#include <bits/stdc++.h>
typedef long long ll;
#define M 1000000007
using namespace std;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int t;
cin >> t;
for (int i = 0; i < t; ++i) {
int n;
cin >> n;
set<int> op;
set<int> me;
for (int i = 1; i <= n; ++i) {
op.insert(i);
}
for (int i = 0; i < n / 2; ++i) {
int val;
cin >> val;
me.insert(val);
op.erase(val);
}
int p = 0;
for (int i = 0; i < n / 2; ++i) {
auto it = op.end();
it--;
int opv = *it;
op.erase(it);
it = me.end();
it--;
int e = *it;
if (e > opv) {
me.erase(it);
p++;
}
else {
me.erase(me.begin());
}
}
cout << p << endl;
}
return 0;
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
1000
2
1
6
2 4 5
...

correct output
0
2
0
2
1
...

user output
0
2
0
2
1
...
Truncated

Test 2

Group: 2

Verdict: ACCEPTED

input
1000
70
56 23 58 70 2 57 27 61 47 3 42...

correct output
30
15
1
38
29
...

user output
30
15
1
38
29
...
Truncated