This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "bubblesort2.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 50;
int mx[4 * N], delta[4 * N];
vector<pair<int, int>> D;
void add(int v, int l, int r, int L, int R, int d) {
if (R <= L || R <= l || r <= L) return;
if (l >= L && r <= R) {
mx[v] += d, delta[v] += d;
return;
}
int m = l + r >> 1;
add(v<<1, l, m, L, R, d);
add(v<<1|1, m, r, L, R, d);
mx[v] = max(mx[v<<1], mx[v<<1|1]) + delta[v];
}
int loc(pair<int, int> p) {return lower_bound(D.begin(), D.end(), p) - D.begin();}
vector<int> countScans(vector<int> A, vector<int> X, vector<int> V){
int Q = X.size();
int n = A.size();
D.reserve(Q + n);
for (int i = 0; i < n; i++)
D.emplace_back(A[i], i);
for (int i = 0; i < Q; i++)
D.emplace_back(V[i], X[i]);
sort(D.begin(), D.end()), D.resize(unique(D.begin(), D.end()) - D.begin());
for (int i = 0; i < n; i++) {
int ind = loc({A[i], i});
add(1, 0, D.size(), ind, ind + 1, +i);
add(1, 0, D.size(), ind + 1, D.size(), -1);
}
vector<int> answer(Q);
for (int i = 0; i < Q; i++) {
int ind = loc({A[X[i]], X[i]});
add(1, 0, D.size(), ind, ind + 1, -X[i]);
add(1, 0, D.size(), ind + 1, D.size(), +1);
ind = loc({V[i], X[i]});
add(1, 0, D.size(), ind, ind + 1, +X[i]);
add(1, 0, D.size(), ind + 1, D.size(), -1);
A[X[i]] = V[i];
answer[i] = max(mx[1], 0);
}
return answer;
}
Compilation message (stderr)
bubblesort2.cpp: In function 'void add(int, int, int, int, int, int)':
bubblesort2.cpp:13:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
13 | int m = l + r >> 1;
| ~~^~~
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