#include <iostream>
#include <bits/stdc++.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
#include <stack>
#include <string>
#include <map>
#include <queue>
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
using namespace std;
#define int long long
#define ll long long
#define vi vector<long long>
#define pb push_back
#define sz(s) (int)s.size()
#define all(v) v.begin(), v.end()
#define show(a) cerr << #a <<" -> "<< a <<"\n"
#define pp pair<int,int>
#define FF first
#define SS second
#define endl "\n"
const int N = 1e6 + 2, N3 = 1e3 + 6, inf = 1e9 + 7, LOG = 20;
map<char, int> md{{'N', 0}, {'E', 1}, {'S', 2}, {'W', 3}};
const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, 1, 0, -1};
string stepDir = "RDLU";
int n, a[N], t[N * 4];
void upd(int pos, int new_val, int v = 1, int tl = 1, int tr = N) {
if (tl == tr) {
t[v] = new_val;
}
else {
int tm = (tl + tr) / 2;
if (pos <= tm) {
upd(pos, new_val, v * 2, tl, tm);
}
else {
upd(pos, new_val, v * 2 + 1, tm + 1, tr);
}
t[v] = t[v * 2] + t[v * 2 + 1];
}
}
int get_sum(int l, int r, int v = 1, int tl = 1, int tr = N) {
if (l <= tl && tr <= r) {
return t[v];
}
if (tr < l || r < tl) {
return 0;
}
int tm = (tl + tr) / 2;
return get_sum(l, r, v * 2, tl, tm) + get_sum(l, r, v * 2 + 1, tm + 1, tr);
}
main () {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
// freopen(".in", "r", stdin);
// freopen(".out", "w", stdout);
cin >> n;
int ans = n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
if (a[i - 1] + 1 == a[i]) {
ans--;
upd(a[i - 1], 1);
upd(a[i], 1);
}
}
for (int i = 1; i <= n; i++) {
if (a[i] != a[i + 1] && a[i] < a[i + 1] - 1) {
if (get_sum(a[i] + 1, a[i + 1] - 1) == a[i + 1] - a[i] - 1) ans--;
}
}
cout << ans;
return 0;
}
Compilation message
money.cpp:13: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
13 | #pragma comment(linker, "/stack:200000000")
|
money.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
67 | main () {
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
