oj.uz

Submission #618206

# Submission time Handle Problem Language Result Execution time Memory
618206 2022-08-02T03:04:34 Z cheissmart Fish 2 (JOI22_fish2) C++11
60 / 100
 4000 ms 235520 KB 
// 花啊啊啊啊啊啊啊啊啊啊啊啊
#include <iostream>
#include <cstring>
#pragma GCC optimize("Ofast")
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;

const int INF = 1e9 + 7, N = 1e5 + 2;
const ll oo = 1e16;

ll a[N];
int n;

namespace cover {
	int t[N * 2];
	char tag[N * 2];
	int sum(int v, int h) { return tag[v] ? (1 << h) : t[v]; }
	void pull(int p) {
		int h = 0;
	    while(p > 1) {
	        t[p >> 1] = sum(p, h) + sum(p ^ 1, h);
	        p >>= 1;
	        h++;
	    }
	}
	void add(int l, int r, int x) {
		if(l == 1 && r == n + 1) return;
		l--, r--;
		int tl = l, tr = r;
	    for(l += n, r += n; l < r; l >>= 1, r >>= 1) {
	    	if(l & 1) tag[l++] += x;
	    	if(r & 1) tag[--r] += x;
	    }
	    pull(tl + n), pull(tr - 1 + n);
	}
	int qry(int l, int r) {
		l--, r--; 
	    int res = 0, h = 0;
	    for(l += n, r += n; l < r; l >>= 1, r >>= 1, h++) {
	        if(l & 1) res += sum(l++, h);
	        if(r & 1) res += sum(--r, h);
	    }
	    return res;
	}
}

namespace seg {
	template<class A, class B> struct DS {
		pair<A, B> a[29];
		int sz;
		DS() { sz = 0; }
		void clear() { sz = 0; }
		void EB(A& x, B& y) { a[sz++] = {x, y}; }
		void PB(pair<A, B>& p) { a[sz++] = p; }
		pair<A, B>& operator[](int i) { return a[i]; }
		void resize(int s) { sz = s; }
	};
	void cpy(DS<int, ll>& a, DS<int, ll>& b) {
		a.sz = b.sz;
		memcpy(a.a, b.a, a.sz * sizeof (a.a[0]));
	}
	struct node {
		DS<int, ll> bad_pref, bad_suff;
		DS<int, int> bad_seg;
		ll sum;
	} t[N * 2];

	int id(int tl, int tr) {
		tl--, tr -= 2;
	    return (tl + tr) | (tl != tr);
	}

	void pull(int v, int tl, int tr, int lc, int rc, int posl = INF, int posr = 0) {
		cpy(t[v].bad_pref, t[lc].bad_pref);
		cpy(t[v].bad_suff, t[rc].bad_suff);
		for(int i = 0; i < t[rc].bad_pref.sz; i++) {
			ll sum1 = t[rc].bad_pref[i].S + t[lc].sum;
			int pos1 = t[rc].bad_pref[i].F;
			if(sum1 + a[tl - 1] < a[pos1 + 1])
				t[v].bad_pref.EB(pos1, sum1);
		}
		for(int i = 0; i < t[lc].bad_suff.sz; i++) {
			ll sum1 = t[lc].bad_suff[i].S + t[rc].sum;
			int pos1 = t[lc].bad_suff[i].F;
			if(sum1 + a[tr] < a[pos1 - 1])
				t[v].bad_suff.EB(pos1, sum1);
		}

		int szi = t[lc].bad_suff.sz;
		int szj = t[rc].bad_pref.sz;
		int i = 0, j = 0;
		while(i < szi && t[lc].bad_suff[i].F > posl)
			i++;
		while(j < szj && t[rc].bad_pref[j].F < posr)
			j++;
		while(i < szi && j < szj) {
			auto& he = t[lc].bad_suff[i], be = t[rc].bad_pref[j];
			if(a[he.F - 1] < a[be.F + 1]) {
				if(he.S + be.S < a[he.F - 1]) {
					t[v].bad_seg.EB(he.F, be.F);
					cover::add(he.F, be.F + 1, 1);
				}
				i++;
			} else {
				if(he.S + be.S < a[be.F + 1]) {
					t[v].bad_seg.EB(he.F, be.F);
					cover::add(he.F, be.F + 1, 1);
				}
				j++;
			}
		}
		t[v].sum = t[lc].sum + t[rc].sum;
	}
	void build(int tl = 1, int tr = n + 1) {
		int v = id(tl, tr);
		if(tr - tl == 1) {
			t[v].sum = a[tl];
			if(a[tl] + a[tl - 1] < a[tl + 1])
				t[v].bad_pref.EB(tl, a[tl]);
			if(a[tl] + a[tl + 1] < a[tl - 1])
				t[v].bad_suff.EB(tl, a[tl]);
			if(a[tl] < a[tl + 1] && a[tl] < a[tl - 1]) {
				t[v].bad_seg.EB(tl, tl);
				cover::add(tl, tl + 1, 1);
			}
		} else {
			int tm = (tl + tr + 1) / 2;
			build(tl, tm);
			build(tm, tr);
			pull(v, tl, tr, id(tl, tm), id(tm, tr));
		}
	}
	void upd(int pos, int tl = 1, int tr = n + 1) {
		int v = id(tl, tr);
		while(t[v].bad_seg.sz) {
			auto [l, r] = t[v].bad_seg[t[v].bad_seg.sz - 1];
			if(r < pos - 1 || l > pos + 1) break;
			cover::add(l, r + 1, -1);
			t[v].bad_seg.sz--;
		}

		t[v].bad_pref.clear(), t[v].bad_suff.clear();
		if(tr - tl == 1) {
			t[v].sum = a[tl];
			if(a[tl] + a[tl - 1] < a[tl + 1])
				t[v].bad_pref.EB(tl, a[tl]);
			if(a[tl] + a[tl + 1] < a[tl - 1])
				t[v].bad_suff.EB(tl, a[tl]);
			if(a[tl] < a[tl + 1] && a[tl] < a[tl - 1]) {
				t[v].bad_seg.EB(tl, tl);
				cover::add(tl, tl + 1, 1);
			}
		} else {
			int tm = (tl + tr + 1) / 2;
			if(pos - 1 < tm)
				upd(pos, tl, tm);
			if(pos + 1 >= tm)
				upd(pos, tm, tr);
			pull(v, tl, tr, id(tl, tm), id(tm, tr), pos + 1, pos - 1);
		}
	}
}

void upd(int pos, ll val) {
	a[pos] = val;
	seg::upd(pos);
}

#define gc getchar_unlocked
inline int readInt () {
	int c = gc();
	while(!isdigit(c)) c = gc();
	int res = c - '0';
	while(isdigit(c = gc())) res = res * 10 + c - '0';
	return res;
}

#define pc(x) putchar_unlocked(x);
inline void writeInt (int n) {
    int N = n, rev, count = 0;
    rev = N;
    if (N == 0) { pc('0'); return ;}
    while ((rev % 10) == 0) { count++; rev /= 10;}
    rev = 0;
    while (N != 0) { rev = (rev<<3) + (rev<<1) + N % 10; N /= 10;}
    while (rev != 0) { pc(rev % 10 + '0'); rev /= 10;}
    while (count--) pc('0');
}

signed main()
{
	IO_OP;

	n = readInt();
	a[0] = a[n + 1] = oo;
	for(int i = 1; i <= n; i++)
		a[i] = readInt();

	seg::build();

	int q = readInt();
	while(q--) {
		int op = readInt();
		if(op == 1) {
			int x = readInt(), y = readInt();
			upd(x, y);
		} else {
			int l = readInt(), r = readInt();
			ll tl = a[l - 1], tr = a[r + 1];

			if(l - 1 >= 1) upd(l - 1, 1e15);
			if(r + 1 <= n) upd(r + 1, 1e15);
			if(l != 1 || r != n)
				cover::add(l, r + 1, -1);

			writeInt(r - l + 1 - cover::qry(l, r + 1));
			pc('\n');

			if(l != 1 || r != n)
				cover::add(l, r + 1, 1);

			if(l - 1 >= 1) upd(l - 1, tl);
			if(r + 1 <= n) upd(r + 1, tr);
		}
	}

}

Compilation message

fish2.cpp: In function 'void seg::cpy(seg::DS<int, long long int>&, seg::DS<int, long long int>&)':
fish2.cpp:71:42: warning: 'void* memcpy(void*, const void*, size_t)' writing to an object of type 'struct std::pair<int, long long int>' with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess]
   71 |   memcpy(a.a, b.a, a.sz * sizeof (a.a[0]));
      |                                          ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/ostream:38,
                 from /usr/include/c++/10/iostream:39,
                 from fish2.cpp:2:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<int, long long int>' declared here
  211 |     struct pair
      |            ^~~~
fish2.cpp: In function 'void seg::upd(int, int, int)':
fish2.cpp:147:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  147 |    auto [l, r] = t[v].bad_seg[t[v].bad_seg.sz - 1];
      |         ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 233492 KB Output is correct
2 Correct 106 ms 233520 KB Output is correct
3 Correct 117 ms 233484 KB Output is correct
4 Correct 108 ms 233548 KB Output is correct
5 Correct 96 ms 233556 KB Output is correct
6 Correct 120 ms 233548 KB Output is correct
7 Correct 109 ms 233548 KB Output is correct
8 Correct 102 ms 233596 KB Output is correct
9 Correct 117 ms 233576 KB Output is correct
10 Correct 99 ms 233572 KB Output is correct
11 Correct 104 ms 233676 KB Output is correct
12 Correct 108 ms 233600 KB Output is correct
13 Correct 106 ms 233584 KB Output is correct
14 Correct 97 ms 233516 KB Output is correct
15 Correct 102 ms 233552 KB Output is correct
16 Correct 104 ms 233504 KB Output is correct
17 Correct 97 ms 233476 KB Output is correct
18 Correct 117 ms 233548 KB Output is correct
19 Correct 98 ms 233580 KB Output is correct
20 Correct 97 ms 233576 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 233500 KB Output is correct
2 Correct 128 ms 234936 KB Output is correct
3 Correct 120 ms 234856 KB Output is correct
4 Correct 122 ms 234872 KB Output is correct
5 Correct 123 ms 234956 KB Output is correct
6 Correct 124 ms 234840 KB Output is correct
7 Correct 124 ms 234852 KB Output is correct
8 Correct 117 ms 234816 KB Output is correct
9 Correct 113 ms 234960 KB Output is correct
10 Correct 141 ms 234904 KB Output is correct
11 Correct 125 ms 234920 KB Output is correct
12 Correct 130 ms 234920 KB Output is correct
13 Correct 128 ms 234952 KB Output is correct
14 Correct 131 ms 234900 KB Output is correct
15 Correct 152 ms 234900 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 233492 KB Output is correct
2 Correct 106 ms 233520 KB Output is correct
3 Correct 117 ms 233484 KB Output is correct
4 Correct 108 ms 233548 KB Output is correct
5 Correct 96 ms 233556 KB Output is correct
6 Correct 120 ms 233548 KB Output is correct
7 Correct 109 ms 233548 KB Output is correct
8 Correct 102 ms 233596 KB Output is correct
9 Correct 117 ms 233576 KB Output is correct
10 Correct 99 ms 233572 KB Output is correct
11 Correct 104 ms 233676 KB Output is correct
12 Correct 108 ms 233600 KB Output is correct
13 Correct 106 ms 233584 KB Output is correct
14 Correct 97 ms 233516 KB Output is correct
15 Correct 102 ms 233552 KB Output is correct
16 Correct 104 ms 233504 KB Output is correct
17 Correct 97 ms 233476 KB Output is correct
18 Correct 117 ms 233548 KB Output is correct
19 Correct 98 ms 233580 KB Output is correct
20 Correct 97 ms 233576 KB Output is correct
21 Correct 101 ms 233500 KB Output is correct
22 Correct 128 ms 234936 KB Output is correct
23 Correct 120 ms 234856 KB Output is correct
24 Correct 122 ms 234872 KB Output is correct
25 Correct 123 ms 234956 KB Output is correct
26 Correct 124 ms 234840 KB Output is correct
27 Correct 124 ms 234852 KB Output is correct
28 Correct 117 ms 234816 KB Output is correct
29 Correct 113 ms 234960 KB Output is correct
30 Correct 141 ms 234904 KB Output is correct
31 Correct 125 ms 234920 KB Output is correct
32 Correct 130 ms 234920 KB Output is correct
33 Correct 128 ms 234952 KB Output is correct
34 Correct 131 ms 234900 KB Output is correct
35 Correct 152 ms 234900 KB Output is correct
36 Correct 163 ms 234964 KB Output is correct
37 Correct 156 ms 234964 KB Output is correct
38 Correct 184 ms 234896 KB Output is correct
39 Correct 136 ms 234868 KB Output is correct
40 Correct 161 ms 235060 KB Output is correct
41 Correct 135 ms 234844 KB Output is correct
42 Correct 135 ms 234860 KB Output is correct
43 Correct 158 ms 234956 KB Output is correct
44 Correct 141 ms 234948 KB Output is correct
45 Correct 145 ms 234828 KB Output is correct
46 Correct 162 ms 234936 KB Output is correct
47 Correct 169 ms 234956 KB Output is correct
48 Correct 134 ms 234916 KB Output is correct
49 Correct 134 ms 234936 KB Output is correct
50 Correct 150 ms 234960 KB Output is correct
51 Correct 143 ms 234836 KB Output is correct
52 Correct 138 ms 235068 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 233500 KB Output is correct
2 Correct 128 ms 234936 KB Output is correct
3 Correct 120 ms 234856 KB Output is correct
4 Correct 122 ms 234872 KB Output is correct
5 Correct 123 ms 234956 KB Output is correct
6 Correct 124 ms 234840 KB Output is correct
7 Correct 124 ms 234852 KB Output is correct
8 Correct 117 ms 234816 KB Output is correct
9 Correct 113 ms 234960 KB Output is correct
10 Correct 141 ms 234904 KB Output is correct
11 Correct 125 ms 234920 KB Output is correct
12 Correct 130 ms 234920 KB Output is correct
13 Correct 128 ms 234952 KB Output is correct
14 Correct 131 ms 234900 KB Output is correct
15 Correct 152 ms 234900 KB Output is correct
16 Correct 114 ms 233484 KB Output is correct
17 Correct 3707 ms 235320 KB Output is correct
18 Correct 3365 ms 235328 KB Output is correct
19 Correct 3551 ms 235312 KB Output is correct
20 Correct 3857 ms 235320 KB Output is correct
21 Correct 3544 ms 235352 KB Output is correct
22 Correct 3129 ms 235364 KB Output is correct
23 Correct 3373 ms 235520 KB Output is correct
24 Execution timed out 4043 ms 235452 KB Time limit exceeded
25 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 233500 KB Output is correct
2 Correct 128 ms 234936 KB Output is correct
3 Correct 120 ms 234856 KB Output is correct
4 Correct 122 ms 234872 KB Output is correct
5 Correct 123 ms 234956 KB Output is correct
6 Correct 124 ms 234840 KB Output is correct
7 Correct 124 ms 234852 KB Output is correct
8 Correct 117 ms 234816 KB Output is correct
9 Correct 113 ms 234960 KB Output is correct
10 Correct 141 ms 234904 KB Output is correct
11 Correct 125 ms 234920 KB Output is correct
12 Correct 130 ms 234920 KB Output is correct
13 Correct 128 ms 234952 KB Output is correct
14 Correct 131 ms 234900 KB Output is correct
15 Correct 152 ms 234900 KB Output is correct
16 Correct 93 ms 233548 KB Output is correct
17 Correct 615 ms 235012 KB Output is correct
18 Correct 511 ms 235084 KB Output is correct
19 Correct 436 ms 235104 KB Output is correct
20 Correct 429 ms 235148 KB Output is correct
21 Correct 573 ms 235000 KB Output is correct
22 Correct 528 ms 235008 KB Output is correct
23 Correct 487 ms 235152 KB Output is correct
24 Correct 538 ms 235072 KB Output is correct
25 Correct 493 ms 235096 KB Output is correct
26 Correct 259 ms 235092 KB Output is correct
27 Correct 317 ms 234916 KB Output is correct
28 Correct 356 ms 235172 KB Output is correct
29 Correct 271 ms 235016 KB Output is correct
30 Correct 327 ms 234960 KB Output is correct
31 Correct 439 ms 235184 KB Output is correct
32 Correct 479 ms 234968 KB Output is correct
33 Correct 294 ms 235004 KB Output is correct
34 Correct 517 ms 234956 KB Output is correct
35 Correct 267 ms 235152 KB Output is correct
36 Correct 429 ms 235256 KB Output is correct
37 Correct 397 ms 235116 KB Output is correct
38 Correct 291 ms 235208 KB Output is correct
39 Correct 301 ms 235140 KB Output is correct
40 Correct 215 ms 235416 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 233492 KB Output is correct
2 Correct 106 ms 233520 KB Output is correct
3 Correct 117 ms 233484 KB Output is correct
4 Correct 108 ms 233548 KB Output is correct
5 Correct 96 ms 233556 KB Output is correct
6 Correct 120 ms 233548 KB Output is correct
7 Correct 109 ms 233548 KB Output is correct
8 Correct 102 ms 233596 KB Output is correct
9 Correct 117 ms 233576 KB Output is correct
10 Correct 99 ms 233572 KB Output is correct
11 Correct 104 ms 233676 KB Output is correct
12 Correct 108 ms 233600 KB Output is correct
13 Correct 106 ms 233584 KB Output is correct
14 Correct 97 ms 233516 KB Output is correct
15 Correct 102 ms 233552 KB Output is correct
16 Correct 104 ms 233504 KB Output is correct
17 Correct 97 ms 233476 KB Output is correct
18 Correct 117 ms 233548 KB Output is correct
19 Correct 98 ms 233580 KB Output is correct
20 Correct 97 ms 233576 KB Output is correct
21 Correct 101 ms 233500 KB Output is correct
22 Correct 128 ms 234936 KB Output is correct
23 Correct 120 ms 234856 KB Output is correct
24 Correct 122 ms 234872 KB Output is correct
25 Correct 123 ms 234956 KB Output is correct
26 Correct 124 ms 234840 KB Output is correct
27 Correct 124 ms 234852 KB Output is correct
28 Correct 117 ms 234816 KB Output is correct
29 Correct 113 ms 234960 KB Output is correct
30 Correct 141 ms 234904 KB Output is correct
31 Correct 125 ms 234920 KB Output is correct
32 Correct 130 ms 234920 KB Output is correct
33 Correct 128 ms 234952 KB Output is correct
34 Correct 131 ms 234900 KB Output is correct
35 Correct 152 ms 234900 KB Output is correct
36 Correct 163 ms 234964 KB Output is correct
37 Correct 156 ms 234964 KB Output is correct
38 Correct 184 ms 234896 KB Output is correct
39 Correct 136 ms 234868 KB Output is correct
40 Correct 161 ms 235060 KB Output is correct
41 Correct 135 ms 234844 KB Output is correct
42 Correct 135 ms 234860 KB Output is correct
43 Correct 158 ms 234956 KB Output is correct
44 Correct 141 ms 234948 KB Output is correct
45 Correct 145 ms 234828 KB Output is correct
46 Correct 162 ms 234936 KB Output is correct
47 Correct 169 ms 234956 KB Output is correct
48 Correct 134 ms 234916 KB Output is correct
49 Correct 134 ms 234936 KB Output is correct
50 Correct 150 ms 234960 KB Output is correct
51 Correct 143 ms 234836 KB Output is correct
52 Correct 138 ms 235068 KB Output is correct
53 Correct 114 ms 233484 KB Output is correct
54 Correct 3707 ms 235320 KB Output is correct
55 Correct 3365 ms 235328 KB Output is correct
56 Correct 3551 ms 235312 KB Output is correct
57 Correct 3857 ms 235320 KB Output is correct
58 Correct 3544 ms 235352 KB Output is correct
59 Correct 3129 ms 235364 KB Output is correct
60 Correct 3373 ms 235520 KB Output is correct
61 Execution timed out 4043 ms 235452 KB Time limit exceeded
62 Halted 0 ms 0 KB -