| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1097591 |
2024-10-07T15:25:21 Z |
vjudge1 |
Addk (eJOI21_addk) |
C++17 |
|
282 ms |
15956 KB |
#include <set>
#include <map>
#include <cmath>
#include <queue>
#include <deque>
#include <stack>
#include <math.h>
#include <bitset>
#include <vector>
#include <string>
#include <cstdio>
#include <cctype>
#include <numeric>
#include <fstream>
#include <sstream>
#include <cstdlib>
#include <iomanip>
#include <cassert>
#include <cstring>
#include <stdio.h>
#include <string.h>
#include <iterator>
#include <iostream>
#include <algorithm>
#include <strings.h>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#define fore(i, a, b) for (int i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (int i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (int i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
using namespace std;
using ll = long long;
using ld = long double;
template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};
typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
class SegmentTree {
private:
int n;
vector<ll> sum;
ll query(int ql, int qr, int i, int l, int r) {
if (r < ql || qr < l)
return 0;
if (ql <= l && r <= qr)
return sum[i];
const int m = l + r >> 1;
return query(ql, qr, i << 1, l, m) + query(ql, qr, i << 1 | 1, m + 1, r);
}
void modify(int q, ll value, int i, int l, int r) {
if (q < l || r < q)
return;
if (l == r) {
sum[i] = value;
return;
}
const int m = l + r >> 1;
modify(q, value, i << 1, l, m);
modify(q, value, i << 1 | 1, m + 1, r);
sum[i] = sum[i << 1] + sum[i << 1 | 1];
}
public:
SegmentTree(): n(0) {};
SegmentTree(const int n): n(n), sum(n + 5 << 2) {};
void resize(const int m) {
n = m;
sum.resize(n + 5 << 2);
}
ll query(int ql, int qr) {
if (ql > qr)
return 0;
return query(ql, qr, 1, 1, n);
}
void modify(int q, ll value) {
modify(q, value, 1, 1, n);
}
};
constexpr int MAX_N = 1E6 + 6;
int N, K, Q, A[MAX_N];
SegmentTree sum, increasedSum, decreasedSum;
ll findIncreasedSum(int l, int r) {
/*
A[l] * 1 + ... + A[r] * (r - l + 1)
*/
return increasedSum.query(l, r) - sum.query(l, r) * (l - 1);
}
ll findDecreasedSum(int l, int r) {
/*
A[l] * (r - l + 1) + ... + A[r] * 1
*/
return decreasedSum.query(l, r) - sum.query(l, r) * (N - r);
}
ll query(int l, int r, int m) {
/*
Example
m = 5
l = 0 l = 0 l = 0
r = 4 r = 5 r = 9
11111 122221 1234554321
----- -----| 0-----|||||
----- 1|-----||||
2||-----|||
3|||-----||
4||||-----|
5|||||-----
0123456789
*/
int L = l + m - 1, R = r - m + 1;
if (L < R)
return findIncreasedSum(l, L) + m * sum.query(L + 1, R - 1) + findDecreasedSum(R, r);
// cerr << findIncreasedSum(l, R - 1) << ' ' << (R - l + 1) * sum.query(R, L) << ' ' << findDecreasedSum(L + 1, r) << '\n';
return findIncreasedSum(l, R - 1) + (R - l + 1) * sum.query(R, L) + findDecreasedSum(L + 1, r);
}
void setValue(const int i, const int value) {
A[i] = value;
sum.modify(i, A[i]);
increasedSum.modify(i, 1LL * i * A[i]);
decreasedSum.modify(i, (N - i + 1LL) * A[i]);
}
void solveSecondQuery() {
static int l, r, m;
cin >> l >> r >> m;
cout << query(l, r, m) << '\n';
}
void solveFirstQuery() {
static int i[MAX_N], a[MAX_N];
fort(k, 1, K)
cin >> i[k];
fore(k, 1, K)
a[i[k]] = A[i[k + 1]];
a[i[K]] = A[i[1]];
fort(k, 1, K)
setValue(i[k], a[i[k]]);
}
signed main() {
int t;
#ifdef LOCAL
freopen("input.INP", "r", stdin);
// freopen("output.OUT", "w", stdout);
#endif // LOCAL
cin.tie(0) -> sync_with_stdio(0);
cout.tie(0);
cin >> N >> K;
sum.resize(N);
increasedSum.resize(N);
decreasedSum.resize(N);
fort(i, 1, N) {
cin >> A[i];
setValue(i, A[i]);
}
cin >> Q;
fore(_, 0, Q) {
cin >> t;
if (t == 2)
solveSecondQuery();
else if (t == 1)
solveFirstQuery();
}
return 0;
}
Compilation message
Main.cpp: In member function 'll SegmentTree::query(int, int, int, int, int)':
Main.cpp:63:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
63 | const int m = l + r >> 1;
| ~~^~~
Main.cpp: In member function 'void SegmentTree::modify(int, ll, int, int, int)':
Main.cpp:74:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
74 | const int m = l + r >> 1;
| ~~^~~
Main.cpp: In constructor 'SegmentTree::SegmentTree(int)':
Main.cpp:84:43: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
84 | SegmentTree(const int n): n(n), sum(n + 5 << 2) {};
| ~~^~~
Main.cpp: In member function 'void SegmentTree::resize(int)':
Main.cpp:88:22: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
88 | sum.resize(n + 5 << 2);
| ~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
604 KB |
Output is correct |
| 3 |
Correct |
2 ms |
600 KB |
Output is correct |
| 4 |
Correct |
3 ms |
732 KB |
Output is correct |
| 5 |
Correct |
5 ms |
856 KB |
Output is correct |
| 6 |
Correct |
6 ms |
1116 KB |
Output is correct |
| 7 |
Correct |
7 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
8 ms |
1412 KB |
Output is correct |
| 9 |
Correct |
12 ms |
1804 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
26 ms |
3212 KB |
Output is correct |
| 2 |
Correct |
41 ms |
4444 KB |
Output is correct |
| 3 |
Correct |
57 ms |
5968 KB |
Output is correct |
| 4 |
Correct |
99 ms |
10384 KB |
Output is correct |
| 5 |
Correct |
147 ms |
14624 KB |
Output is correct |
| 6 |
Correct |
148 ms |
14164 KB |
Output is correct |
| 7 |
Correct |
157 ms |
14156 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
138 ms |
7860 KB |
Output is correct |
| 2 |
Correct |
144 ms |
12112 KB |
Output is correct |
| 3 |
Correct |
282 ms |
15956 KB |
Output is correct |
| 4 |
Correct |
170 ms |
14896 KB |
Output is correct |
