#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
#define pb push_back
#define rsz resize
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
using pi = pair<int,int>;
#define f first
#define s second
#define mp make_pair
template<class T, int SZ> struct Seg{
T tree[4*SZ];
T merge(T a, T b){
return max(a, b);
}
void update(int v, int l, int r, int i, T x) {
if (i > r || i < l) {
return;
} else if (l == r) {
tree[v] = x;
} else {
int m = (l + r) / 2;
update(2 * v + 1, l, m, i, x);
update(2 * v + 2, m + 1, r, i, x);
tree[v] = merge(tree[2 * v + 1], tree[2 * v + 2]);
}
}
T query(int v, int l, int r, int ql, int qr) {
if (l > qr || r < ql) {
return 0;
} else if (l >= ql && r <= qr) {
return tree[v];
} else {
int m = (l + r) / 2;
T a = query(2 * v + 1, l, m, ql, qr);
T b = query(2 * v + 2, m + 1, r, ql, qr);
return merge(a,b);
}
}
};
const int MX = 250005;
int pos[MX];
Seg<int, MX> vals;
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n, a; cin >> n >> a;
a--;
vi d(n);
for (int i = 0; i < n; i++) {
cin >> d[i];
pos[d[i]] = i;
vals.update(0, 0, n - 1, i, d[i]);
}
/*
cout << "vals: " << '\n';
for (int i = 0; i < n; i++) {
cout << vals.query(0, 0, n - 1, i, i) << " ";
}
cout << '\n';
*/
int q; cin >> q;
vector<pi> top;
for (int i = max(1, n - 9); i <= n; i++) {
top.pb(mp(i, pos[i]));
}
while(q--) {
char qt; cin >> qt;
if (qt == 'E') {
int i, e; cin >> i >> e;
i--;
vector<pi> order;
/*
cout << "TOP: " << '\n';
for (int x : top) {
cout << x << " ";
}
cout << '\n';
*/
for (int j = 0; j < e - 1; j++) {
if (top.back().s != i) {
int v = top.back().f; int p = top.back().s;
order.pb(mp(v + 1, p));
vals.update(0, 0, n - 1, p, v + 1);
d[p] = v + 1;
}
else {
j--;
}
top.pop_back();
}
int prev = d[i];
// cout << "prev: " << prev << endl;
d[i] = top.back().f + 1;
vals.update(0, 0, n - 1, i, top.back().f + 1);
order.pb(mp(top.back().f + 1, i));
while (!top.empty()) {
if(top.back().f != prev) order.pb(mp(top.back().f, top.back().s));
top.pop_back();
}
reverse(all(order));
for (pi x : order) {
top.pb(x);
}
/*
cout << "vals: " << '\n';
for (int j = 0; j < n; j++) {
cout << d[j] << " ";
}
cout << '\n';
*/
}
else {
int x; cin >> x;
x--;
if (x == a) {
cout << 0 << '\n';
continue;
}
int best = 0;
if (x < a) best = vals.query(0, 0, n - 1, x, a - 1);
else if (x > a) best = vals.query(0, 0, n - 1, a + 1, x);
if (x < a) {
int lo = a + 1; int hi = n - 1;
int ans = n;
while (lo <= hi) {
int mid = (lo + hi) / 2;
if (vals.query(0, 0, n - 1, a + 1, mid) > best) {
ans = mid;
hi = mid - 1;
}
else {
lo = mid + 1;
}
}
cout << (ans - x - 1) << '\n';
}
else {
int lo = 0; int hi = a - 1;
int ans = -1;
while (lo <= hi) {
int mid = (lo + hi) / 2;
if (vals.query(0, 0, n - 1, mid, a - 1) > best) {
ans = mid;
lo = mid + 1;
}
else {
hi = mid - 1;
}
}
cout << (x - ans - 1) << '\n';
}
}
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
33 ms |
384 KB |
Output is correct |
| 5 |
Correct |
209 ms |
640 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Execution timed out |
2096 ms |
792 KB |
Time limit exceeded |
| 2 |
Execution timed out |
2087 ms |
776 KB |
Time limit exceeded |
| 3 |
Execution timed out |
2075 ms |
960 KB |
Time limit exceeded |
| 4 |
Correct |
308 ms |
632 KB |
Output is correct |
| 5 |
Execution timed out |
2075 ms |
1144 KB |
Time limit exceeded |
| 6 |
Execution timed out |
2079 ms |
928 KB |
Time limit exceeded |
| 7 |
Execution timed out |
2085 ms |
1128 KB |
Time limit exceeded |
| 8 |
Correct |
405 ms |
888 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
380 ms |
2936 KB |
Output is correct |
| 2 |
Correct |
273 ms |
2808 KB |
Output is correct |
| 3 |
Correct |
288 ms |
2552 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
373 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
478 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
411 ms |
4856 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1180 ms |
716 KB |
Output is correct |
| 2 |
Correct |
1783 ms |
888 KB |
Output is correct |
| 3 |
Execution timed out |
2087 ms |
2132 KB |
Time limit exceeded |
| 4 |
Execution timed out |
2060 ms |
2020 KB |
Time limit exceeded |
| 5 |
Execution timed out |
2092 ms |
760 KB |
Time limit exceeded |
| 6 |
Execution timed out |
2082 ms |
1980 KB |
Time limit exceeded |
| 7 |
Execution timed out |
2084 ms |
1116 KB |
Time limit exceeded |
| 8 |
Execution timed out |
2096 ms |
2424 KB |
Time limit exceeded |
| 9 |
Execution timed out |
2053 ms |
5808 KB |
Time limit exceeded |
| 10 |
Execution timed out |
2094 ms |
760 KB |
Time limit exceeded |
| 11 |
Execution timed out |
2080 ms |
1264 KB |
Time limit exceeded |
| 12 |
Execution timed out |
2099 ms |
4488 KB |
Time limit exceeded |
| 13 |
Execution timed out |
2040 ms |
4744 KB |
Time limit exceeded |
