#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <list>
#include <utility>
#include <cmath>
#include <assert.h>
#include <numeric>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 500007;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const int dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};
set <int> s;
int n, a, q, b[M], seg[4 * M], cur, pos[4 * M];
void upd(int i, int v, int node = 1, int l = 1, int r = n)
{
if(l == r){
seg[node] = v;
return;
}
int mid = (l + r) / 2;
if(i <= mid) upd(i, v, 2 * node, l, mid);
else upd(i, v, 2 * node + 1, mid + 1, r);
seg[node] = max(seg[2 * node], seg[2 * node + 1]);
return;
}
int get(int st, int en, int node = 1, int l = 1, int r = n)
{
if(l > en || r < st) return 0;
if(l >= st && r <= en) return seg[node];
int mid = (l + r) / 2;
return max(get(st, en, 2 * node, l, mid), get(st, en, 2 * node + 1, mid + 1, r));
}
int findr(int st, int en, int v, int node = 1, int l = 1, int r = n)
{
if(l > en || r < st || seg[node] < v) return -1;
if(l == r) return l;
int mid = (l + r) / 2;
int ret = findr(st, en, v, 2 * node + 1, mid + 1, r);
if(ret == -1) ret = findr(st, en, v, 2 * node, l, mid);
return ret;
}
int findl(int st, int en, int v, int node = 1, int l = 1, int r = n)
{
if(l > en || r < st || seg[node] < v) return -1;
if(l == r) return l;
int mid = (l + r) / 2;
int ret = findl(st, en, v, 2 * node, l, mid);
if(ret == -1) ret = findl(st, en, v, 2 * node + 1, mid + 1, r);
return ret;
}
int main()
{
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> a;
for(int i = 1; i <= n; ++i){
cin >> b[i];
upd(i, b[i]);
s.insert(b[i]);
pos[b[i]] = i;
}
cin >> q;
while(q--){
char c;
cin >> c;
if(c == 'F'){
int x;
cin >> x;
if(x == a) cout << 0 << endl;
else if(a == 1 || a == n) cout << abs(a - x) << endl;
else if(x > a){
int res = get(a + 1, x), ans = x - a;
int add = findr(1, a - 1, res);
if(add == -1) add = 0;
ans += a - add - 1;
cout << ans << endl;
}
else{
int res = get(x, a - 1), ans = a - x;
int add = findl(a + 1, n, res);
if(add == -1) add = n + 1;
ans += add - a - 1;
cout << ans << endl;
}
}
else{
int id, x;
cin >> id >> x;
vector <int> v;
for(int i = 1; i < x; ++i){
v.pb(*(--s.end()));
s.erase(--s.end());
}
int val = 1;
if(s.size()) val = *(--s.end()) + 1;
reverse(all(v));
while(!v.empty()){
int cur = v.back();
int p = pos[cur];
v.pop_back();
pos[cur + 1] = p;
b[p] = cur + 1;
upd(p, cur + 1);
s.insert(cur + 1);
}
s.erase(b[id]);
b[id] = val;
s.insert(val);
pos[val] = id;
upd(id, val);
}
}
return 0;
}
// Don't forget special cases. (n = 1?)
// Look for the constraints. (Runtime array? overflow?)
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
5 ms |
444 KB |
Output is correct |
5 |
Correct |
17 ms |
1176 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
472 ms |
2900 KB |
Output is correct |
2 |
Correct |
238 ms |
2884 KB |
Output is correct |
3 |
Correct |
316 ms |
2848 KB |
Output is correct |
4 |
Correct |
175 ms |
2916 KB |
Output is correct |
5 |
Correct |
525 ms |
3960 KB |
Output is correct |
6 |
Correct |
442 ms |
3872 KB |
Output is correct |
7 |
Correct |
338 ms |
3812 KB |
Output is correct |
8 |
Correct |
204 ms |
3844 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
94 ms |
7412 KB |
Output is correct |
2 |
Correct |
78 ms |
7200 KB |
Output is correct |
3 |
Correct |
69 ms |
7248 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
214 ms |
16624 KB |
Output is correct |
6 |
Correct |
202 ms |
16740 KB |
Output is correct |
7 |
Correct |
140 ms |
16544 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
680 KB |
Output is correct |
2 |
Correct |
34 ms |
796 KB |
Output is correct |
3 |
Correct |
83 ms |
3928 KB |
Output is correct |
4 |
Correct |
117 ms |
3920 KB |
Output is correct |
5 |
Correct |
152 ms |
1100 KB |
Output is correct |
6 |
Correct |
149 ms |
5088 KB |
Output is correct |
7 |
Correct |
144 ms |
1880 KB |
Output is correct |
8 |
Correct |
200 ms |
7584 KB |
Output is correct |
9 |
Correct |
1026 ms |
18800 KB |
Output is correct |
10 |
Correct |
468 ms |
2440 KB |
Output is correct |
11 |
Correct |
587 ms |
4076 KB |
Output is correct |
12 |
Correct |
959 ms |
16048 KB |
Output is correct |
13 |
Correct |
723 ms |
18828 KB |
Output is correct |