oj.uz

답안 #701755

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
701755 2023-02-22T04:12:49 Z shmad Progression (NOI20_progression) C++17
59 / 100
 268 ms 67848 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define f first
#define s second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;

const int N = 1e6 + 5, mod = 1e9 + 7;
const ll inf = 1e18 + 7;
const ld eps = 1e-6;

int n, q, a[N], d[N];

vt<array<int, 5>> qr;

struct Data {
 	int lst, frst, pref, suf, ans, len;
	Data operator + (Data other) const {
		Data res;
		res.len = len + other.len, res.ans = max(ans, other.ans);
		res.frst = frst, res.lst = other.lst;
		res.pref = pref, res.suf = other.suf;
		res.ans = max(ans, other.ans);
		if (lst == other.frst) {
			if (pref == len) res.pref += other.pref;
			if (other.suf == other.len) res.suf += suf;
			res.ans = max(res.ans, suf + other.pref);
		}
		return res;
	}
}t[4 * N];

void build (int v = 1, int tl = 1, int tr = n + 1) {
	if (tl == tr) {
		t[v] = {d[tl], d[tl], 1, 1, 1, 1};
		return;
	}
	int tm = tl + tr >> 1;
	build(v << 1, tl, tm), build(v << 1 | 1, tm + 1, tr);
	t[v] = t[v << 1] + t[v << 1 | 1];
}

void upd (int pos, int x, int v = 1, int tl = 1, int tr = n + 1) {
	if (tl == tr) {
		t[v] = {t[v].frst + x, t[v].lst + x, 1, 1, 1, 1};
		return;
	}
	int tm = tl + tr >> 1;
	if (pos <= tm) upd(pos, x, v << 1, tl, tm);
	else upd(pos, x, v << 1 | 1, tm + 1, tr);
	t[v] = t[v << 1] + t[v << 1 | 1];
}

Data get (int l, int r, int v = 1, int tl = 1, int tr = n + 1) {
	if (tl > r || tr < l) return {0, 0, 0, 0, 0, 0};
	if (tl >= l && tr <= r) return t[v];
	int tm = tl + tr >> 1;
	return get(l, r, v << 1, tl, tm) + get(l, r, v << 1 | 1, tm + 1, tr);
}

void solve () {
	cin >> n >> q;
	for (int i = 1; i <= n; i++) cin >> a[i];
	for (int i = 1; i < n; i++) d[i] = a[i + 1] - a[i];
	bool sub1 = 1;
	for (int i = 1; i <= q; i++) {
		int tp, l, r, s = -1, c = -1;
		cin >> tp >> l >> r;
		if (tp < 3) cin >> s >> c;
		qr.pb({tp, l, r, s, c});
	    sub1 &= (l == 1 && r == n);
	}
	if (sub1) {
		int ans = 1, cur = 1, k = a[2] - a[1];
	    for (int i = 1; i < n; i++) {
			if (a[i + 1] - a[i] == k) cur++;
			else {                  	
				k = a[i + 1] - a[i];
				ans = max(ans, cur);
				cur = 2;
			}
	    }
	    ans = max(ans, cur);
		for (auto [tp, l, r, s, c]: qr) {
        	if (tp == 2) ans = n;
        	if (tp == 3) cout << ans << '\n'; 
        }
        return;
	}
	if (max(n, q) <= 1000) {
		for (auto [tp, l, r, s, c]: qr) {
		    if (tp == 1) {
		    	for (int i = l; i <= r; i++) a[i] += (s + (i - l) * c);
		    }
		    if (tp == 2) {
				for (int i = l; i <= r; i++) a[i] = (s + (i - l) * c);
		    }
		    if (tp == 3) {
		    	if (l == r) {
		    		cout << "1\n";
		    		continue;
		    	}
		        int ans = 1, cur = 1, k = a[l + 1] - a[l];
		     	for (int i = l; i < r; i++) {
					if (a[i + 1] - a[i] == k) cur++;
					else {
						k = a[i + 1] - a[i];
						ans = max(ans, cur);
						cur = 2;
					}
		     	}
		     	ans = max(ans, cur);
		     	cout << ans << '\n';
		    }
		}
		return;
	}
	build();
	for (auto [tp, l, r, s, c]: qr) {
		if (tp == 3) cout << get(l, r - 1).ans + 1 << '\n';
	}
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

Compilation message

Progression.cpp: In function 'void build(long long int, long long int, long long int)':
Progression.cpp:51:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |  int tm = tl + tr >> 1;
      |           ~~~^~~~
Progression.cpp: In function 'void upd(long long int, long long int, long long int, long long int, long long int)':
Progression.cpp:61:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   61 |  int tm = tl + tr >> 1;
      |           ~~~^~~~
Progression.cpp: In function 'Data get(long long int, long long int, long long int, long long int, long long int)':
Progression.cpp:70:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   70 |  int tm = tl + tr >> 1;
      |           ~~~^~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 118 ms 26020 KB Output is correct
2 Correct 82 ms 21244 KB Output is correct
3 Correct 91 ms 21180 KB Output is correct
4 Correct 81 ms 21260 KB Output is correct
5 Correct 81 ms 21180 KB Output is correct
6 Correct 81 ms 21168 KB Output is correct
7 Correct 80 ms 21152 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 117 ms 25888 KB Output is correct
12 Correct 120 ms 25876 KB Output is correct
13 Correct 119 ms 25884 KB Output is correct
14 Correct 127 ms 25908 KB Output is correct
15 Correct 119 ms 25908 KB Output is correct
16 Correct 120 ms 25828 KB Output is correct
17 Correct 122 ms 25840 KB Output is correct
18 Correct 126 ms 26064 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 352 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 352 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 396 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 2 ms 468 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 240 ms 67408 KB Output is correct
2 Correct 94 ms 21280 KB Output is correct
3 Correct 95 ms 21288 KB Output is correct
4 Correct 87 ms 21372 KB Output is correct
5 Correct 104 ms 21312 KB Output is correct
6 Correct 98 ms 21276 KB Output is correct
7 Correct 100 ms 21336 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 257 ms 67468 KB Output is correct
12 Correct 246 ms 67400 KB Output is correct
13 Correct 257 ms 67096 KB Output is correct
14 Correct 258 ms 67204 KB Output is correct
15 Correct 247 ms 67520 KB Output is correct
16 Correct 260 ms 67720 KB Output is correct
17 Correct 268 ms 67684 KB Output is correct
18 Correct 264 ms 67848 KB Output is correct
19 Correct 239 ms 67096 KB Output is correct
20 Correct 250 ms 67112 KB Output is correct
21 Correct 243 ms 67100 KB Output is correct

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 222 ms 66812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 240 ms 67408 KB Output is correct
2 Correct 94 ms 21280 KB Output is correct
3 Correct 95 ms 21288 KB Output is correct
4 Correct 87 ms 21372 KB Output is correct
5 Correct 104 ms 21312 KB Output is correct
6 Correct 98 ms 21276 KB Output is correct
7 Correct 100 ms 21336 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 257 ms 67468 KB Output is correct
12 Correct 246 ms 67400 KB Output is correct
13 Correct 257 ms 67096 KB Output is correct
14 Correct 258 ms 67204 KB Output is correct
15 Correct 247 ms 67520 KB Output is correct
16 Correct 260 ms 67720 KB Output is correct
17 Correct 268 ms 67684 KB Output is correct
18 Correct 264 ms 67848 KB Output is correct
19 Correct 239 ms 67096 KB Output is correct
20 Correct 250 ms 67112 KB Output is correct
21 Correct 243 ms 67100 KB Output is correct
22 Incorrect 243 ms 66952 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 118 ms 26020 KB Output is correct
2 Correct 82 ms 21244 KB Output is correct
3 Correct 91 ms 21180 KB Output is correct
4 Correct 81 ms 21260 KB Output is correct
5 Correct 81 ms 21180 KB Output is correct
6 Correct 81 ms 21168 KB Output is correct
7 Correct 80 ms 21152 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 117 ms 25888 KB Output is correct
12 Correct 120 ms 25876 KB Output is correct
13 Correct 119 ms 25884 KB Output is correct
14 Correct 127 ms 25908 KB Output is correct
15 Correct 119 ms 25908 KB Output is correct
16 Correct 120 ms 25828 KB Output is correct
17 Correct 122 ms 25840 KB Output is correct
18 Correct 126 ms 26064 KB Output is correct
19 Correct 1 ms 352 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 352 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 396 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 2 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 240 ms 67408 KB Output is correct
41 Correct 94 ms 21280 KB Output is correct
42 Correct 95 ms 21288 KB Output is correct
43 Correct 87 ms 21372 KB Output is correct
44 Correct 104 ms 21312 KB Output is correct
45 Correct 98 ms 21276 KB Output is correct
46 Correct 100 ms 21336 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 257 ms 67468 KB Output is correct
51 Correct 246 ms 67400 KB Output is correct
52 Correct 257 ms 67096 KB Output is correct
53 Correct 258 ms 67204 KB Output is correct
54 Correct 247 ms 67520 KB Output is correct
55 Correct 260 ms 67720 KB Output is correct
56 Correct 268 ms 67684 KB Output is correct
57 Correct 264 ms 67848 KB Output is correct
58 Correct 239 ms 67096 KB Output is correct
59 Correct 250 ms 67112 KB Output is correct
60 Correct 243 ms 67100 KB Output is correct
61 Incorrect 222 ms 66812 KB Output isn't correct
62 Halted 0 ms 0 KB -