#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
typedef long long ll;
typedef long double ld;
using namespace std;
using namespace __gnu_pbds;
using ordered_set = tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update>;
#define all(x) x.begin(), x.end()
#define pll pair<ll, ll>
#define fast ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
const ll mod = 998244353;
ld fpow(ll a, ll b, ll m = -1)
{
if (m != -1)
a %= m;
ll res = 1;
while (b > 0)
{
if (b % 2 == 1)
{
if (m != -1)
res = res * a % m;
else
{
res *= a;
}
}
a = a * a;
if (m != -1)
{
a %= m;
}
b /= 2;
}
return res;
}
int main()
{
fast;
// freopen("pails.in", "r", stdin);
// freopen("pails.out", "w", stdout);
ll t = 1;
// cin >> t;
while (t--)
{
ll n;
cin >> n;
string s;
cin >> s;
string t = s.substr(n, n);
vector<set<ll>> v(200);
for (int i = 0; i < n; i++)
{
v[t[i]].insert(i);
}
ordered_set os;
ll ans = 0;
for (int i = 0; i < n; i++)
{
if (v[s[i]].empty())
continue;
os.insert(*v[s[i]].begin());
ans += i - os.order_of_key(*v[s[i]].begin());
v[s[i]].erase(v[s[i]].begin());
}
cout << ans << '\n';
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
