# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
877167 |
2023-11-23T02:20:33 Z |
noiaint |
Poklon (COCI17_poklon) |
C++17 |
|
743 ms |
27592 KB |
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
#define file ""
#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define bit(x) (1LL << (x))
#define getbit(x, i) (((x) >> (i)) & 1)
#define popcount __builtin_popcountll
mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
return l + rd() % (r - l + 1);
}
const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;
template<class X, class Y> bool mini(X &a, Y b) {
return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
a += b;
if (a >= mod) a -= mod;
if (a < 0) a += mod;
}
const int block = 750;
struct query {
int l, r, id;
query(int _l = 0, int _r = 0, int _id = 0) {
l = _l;
r = _r;
id = _id;
}
bool operator < (const query &a) const {
return l / block != a.l / block ? l / block < a.l / block : r < a.r;
}
};
int n, q;
int a[N];
vector<query> queries;
int cnt[N];
int ans[N];
int res = 0;
void ins(int x) {
cnt[x] += 1;
if (cnt[x] == 2) ++res;
if (cnt[x] == 3) --res;
}
void del(int x) {
cnt[x] -= 1;
if (cnt[x] == 2) ++res;
if (cnt[x] == 1) --res;
}
void process() {
cin >> n >> q;
vector<int> values;
for (int i = 1; i <= n; ++i) {
cin >> a[i];
values.push_back(a[i]);
}
sort(all(values));
for (int i = 1; i <= n; ++i) a[i] = lower_bound(all(values), a[i]) - values.begin();
for (int i = 1; i <= q; ++i) {
int l, r;
cin >> l >> r;
queries.emplace_back(l, r, i);
}
sort(all(queries));
int L = 1, R = 1;
ins(a[1]);
for (auto [l, r, id] : queries) {
while (L < l) del(a[L++]);
while (L > l) ins(a[--L]);
while (R < r) ins(a[++R]);
while (R > r) del(a[R--]);
ans[id] = res;
}
for (int i = 1; i <= q; ++i) cout << ans[i] << '\n';
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
// freopen(file".inp", "r", stdin);
// freopen(file".out", "w", stdout);
int tc = 1;
// cin >> tc;
while (tc--) {
process();
}
return 0;
}
/*
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
4 ms |
2652 KB |
Output is correct |
5 |
Correct |
91 ms |
8328 KB |
Output is correct |
6 |
Correct |
81 ms |
8520 KB |
Output is correct |
7 |
Correct |
212 ms |
15176 KB |
Output is correct |
8 |
Correct |
391 ms |
20404 KB |
Output is correct |
9 |
Correct |
620 ms |
23708 KB |
Output is correct |
10 |
Correct |
743 ms |
27592 KB |
Output is correct |