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답안 #618199

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
618199 2022-08-02T02:48:13 Z cheissmart Fish 2 (JOI22_fish2) C++14
60 / 100
 4000 ms 237816 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

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 233508 KB Output is correct
2 Correct 96 ms 233592 KB Output is correct
3 Correct 100 ms 233548 KB Output is correct
4 Correct 108 ms 233500 KB Output is correct
5 Correct 96 ms 233484 KB Output is correct
6 Correct 109 ms 233492 KB Output is correct
7 Correct 97 ms 233544 KB Output is correct
8 Correct 103 ms 233488 KB Output is correct
9 Correct 101 ms 233548 KB Output is correct
10 Correct 98 ms 233528 KB Output is correct
11 Correct 104 ms 233584 KB Output is correct
12 Correct 116 ms 233516 KB Output is correct
13 Correct 101 ms 233488 KB Output is correct
14 Correct 97 ms 233536 KB Output is correct
15 Correct 117 ms 233492 KB Output is correct
16 Correct 100 ms 233548 KB Output is correct
17 Correct 98 ms 233536 KB Output is correct
18 Correct 169 ms 233592 KB Output is correct
19 Correct 108 ms 233592 KB Output is correct
20 Correct 107 ms 233548 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 233484 KB Output is correct
2 Correct 135 ms 235580 KB Output is correct
3 Correct 140 ms 235280 KB Output is correct
4 Correct 127 ms 235444 KB Output is correct
5 Correct 129 ms 235204 KB Output is correct
6 Correct 177 ms 235804 KB Output is correct
7 Correct 123 ms 235148 KB Output is correct
8 Correct 118 ms 235928 KB Output is correct
9 Correct 113 ms 235068 KB Output is correct
10 Correct 128 ms 235444 KB Output is correct
11 Correct 127 ms 235252 KB Output is correct
12 Correct 122 ms 235080 KB Output is correct
13 Correct 119 ms 235124 KB Output is correct
14 Correct 124 ms 235504 KB Output is correct
15 Correct 126 ms 235468 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 233508 KB Output is correct
2 Correct 96 ms 233592 KB Output is correct
3 Correct 100 ms 233548 KB Output is correct
4 Correct 108 ms 233500 KB Output is correct
5 Correct 96 ms 233484 KB Output is correct
6 Correct 109 ms 233492 KB Output is correct
7 Correct 97 ms 233544 KB Output is correct
8 Correct 103 ms 233488 KB Output is correct
9 Correct 101 ms 233548 KB Output is correct
10 Correct 98 ms 233528 KB Output is correct
11 Correct 104 ms 233584 KB Output is correct
12 Correct 116 ms 233516 KB Output is correct
13 Correct 101 ms 233488 KB Output is correct
14 Correct 97 ms 233536 KB Output is correct
15 Correct 117 ms 233492 KB Output is correct
16 Correct 100 ms 233548 KB Output is correct
17 Correct 98 ms 233536 KB Output is correct
18 Correct 169 ms 233592 KB Output is correct
19 Correct 108 ms 233592 KB Output is correct
20 Correct 107 ms 233548 KB Output is correct
21 Correct 102 ms 233484 KB Output is correct
22 Correct 135 ms 235580 KB Output is correct
23 Correct 140 ms 235280 KB Output is correct
24 Correct 127 ms 235444 KB Output is correct
25 Correct 129 ms 235204 KB Output is correct
26 Correct 177 ms 235804 KB Output is correct
27 Correct 123 ms 235148 KB Output is correct
28 Correct 118 ms 235928 KB Output is correct
29 Correct 113 ms 235068 KB Output is correct
30 Correct 128 ms 235444 KB Output is correct
31 Correct 127 ms 235252 KB Output is correct
32 Correct 122 ms 235080 KB Output is correct
33 Correct 119 ms 235124 KB Output is correct
34 Correct 124 ms 235504 KB Output is correct
35 Correct 126 ms 235468 KB Output is correct
36 Correct 146 ms 235504 KB Output is correct
37 Correct 163 ms 235260 KB Output is correct
38 Correct 198 ms 235228 KB Output is correct
39 Correct 146 ms 235556 KB Output is correct
40 Correct 162 ms 235308 KB Output is correct
41 Correct 132 ms 235916 KB Output is correct
42 Correct 141 ms 235888 KB Output is correct
43 Correct 142 ms 235132 KB Output is correct
44 Correct 145 ms 235080 KB Output is correct
45 Correct 153 ms 235516 KB Output is correct
46 Correct 142 ms 235472 KB Output is correct
47 Correct 166 ms 235212 KB Output is correct
48 Correct 131 ms 235192 KB Output is correct
49 Correct 129 ms 235144 KB Output is correct
50 Correct 132 ms 235524 KB Output is correct
51 Correct 141 ms 235528 KB Output is correct
52 Correct 149 ms 235476 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 233484 KB Output is correct
2 Correct 135 ms 235580 KB Output is correct
3 Correct 140 ms 235280 KB Output is correct
4 Correct 127 ms 235444 KB Output is correct
5 Correct 129 ms 235204 KB Output is correct
6 Correct 177 ms 235804 KB Output is correct
7 Correct 123 ms 235148 KB Output is correct
8 Correct 118 ms 235928 KB Output is correct
9 Correct 113 ms 235068 KB Output is correct
10 Correct 128 ms 235444 KB Output is correct
11 Correct 127 ms 235252 KB Output is correct
12 Correct 122 ms 235080 KB Output is correct
13 Correct 119 ms 235124 KB Output is correct
14 Correct 124 ms 235504 KB Output is correct
15 Correct 126 ms 235468 KB Output is correct
16 Correct 102 ms 233568 KB Output is correct
17 Correct 3477 ms 237072 KB Output is correct
18 Correct 3253 ms 237388 KB Output is correct
19 Correct 3423 ms 236964 KB Output is correct
20 Correct 3698 ms 237060 KB Output is correct
21 Correct 3346 ms 237128 KB Output is correct
22 Correct 3216 ms 237372 KB Output is correct
23 Correct 3319 ms 237028 KB Output is correct
24 Correct 3876 ms 236952 KB Output is correct
25 Correct 3314 ms 236932 KB Output is correct
26 Correct 3981 ms 237024 KB Output is correct
27 Correct 1226 ms 237816 KB Output is correct
28 Correct 1240 ms 237800 KB Output is correct
29 Correct 1271 ms 237764 KB Output is correct
30 Correct 2407 ms 236672 KB Output is correct
31 Correct 2585 ms 236832 KB Output is correct
32 Execution timed out 4080 ms 236948 KB Time limit exceeded
33 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 233484 KB Output is correct
2 Correct 135 ms 235580 KB Output is correct
3 Correct 140 ms 235280 KB Output is correct
4 Correct 127 ms 235444 KB Output is correct
5 Correct 129 ms 235204 KB Output is correct
6 Correct 177 ms 235804 KB Output is correct
7 Correct 123 ms 235148 KB Output is correct
8 Correct 118 ms 235928 KB Output is correct
9 Correct 113 ms 235068 KB Output is correct
10 Correct 128 ms 235444 KB Output is correct
11 Correct 127 ms 235252 KB Output is correct
12 Correct 122 ms 235080 KB Output is correct
13 Correct 119 ms 235124 KB Output is correct
14 Correct 124 ms 235504 KB Output is correct
15 Correct 126 ms 235468 KB Output is correct
16 Correct 102 ms 233492 KB Output is correct
17 Correct 581 ms 236492 KB Output is correct
18 Correct 526 ms 237112 KB Output is correct
19 Correct 433 ms 236616 KB Output is correct
20 Correct 422 ms 236860 KB Output is correct
21 Correct 521 ms 236496 KB Output is correct
22 Correct 498 ms 236868 KB Output is correct
23 Correct 504 ms 236392 KB Output is correct
24 Correct 484 ms 236864 KB Output is correct
25 Correct 535 ms 236556 KB Output is correct
26 Correct 252 ms 237536 KB Output is correct
27 Correct 318 ms 237524 KB Output is correct
28 Correct 361 ms 236748 KB Output is correct
29 Correct 276 ms 237544 KB Output is correct
30 Correct 326 ms 237512 KB Output is correct
31 Correct 458 ms 236768 KB Output is correct
32 Correct 486 ms 236864 KB Output is correct
33 Correct 296 ms 236540 KB Output is correct
34 Correct 459 ms 237228 KB Output is correct
35 Correct 265 ms 236916 KB Output is correct
36 Correct 435 ms 237036 KB Output is correct
37 Correct 408 ms 236544 KB Output is correct
38 Correct 277 ms 236696 KB Output is correct
39 Correct 353 ms 237212 KB Output is correct
40 Correct 194 ms 237156 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 233508 KB Output is correct
2 Correct 96 ms 233592 KB Output is correct
3 Correct 100 ms 233548 KB Output is correct
4 Correct 108 ms 233500 KB Output is correct
5 Correct 96 ms 233484 KB Output is correct
6 Correct 109 ms 233492 KB Output is correct
7 Correct 97 ms 233544 KB Output is correct
8 Correct 103 ms 233488 KB Output is correct
9 Correct 101 ms 233548 KB Output is correct
10 Correct 98 ms 233528 KB Output is correct
11 Correct 104 ms 233584 KB Output is correct
12 Correct 116 ms 233516 KB Output is correct
13 Correct 101 ms 233488 KB Output is correct
14 Correct 97 ms 233536 KB Output is correct
15 Correct 117 ms 233492 KB Output is correct
16 Correct 100 ms 233548 KB Output is correct
17 Correct 98 ms 233536 KB Output is correct
18 Correct 169 ms 233592 KB Output is correct
19 Correct 108 ms 233592 KB Output is correct
20 Correct 107 ms 233548 KB Output is correct
21 Correct 102 ms 233484 KB Output is correct
22 Correct 135 ms 235580 KB Output is correct
23 Correct 140 ms 235280 KB Output is correct
24 Correct 127 ms 235444 KB Output is correct
25 Correct 129 ms 235204 KB Output is correct
26 Correct 177 ms 235804 KB Output is correct
27 Correct 123 ms 235148 KB Output is correct
28 Correct 118 ms 235928 KB Output is correct
29 Correct 113 ms 235068 KB Output is correct
30 Correct 128 ms 235444 KB Output is correct
31 Correct 127 ms 235252 KB Output is correct
32 Correct 122 ms 235080 KB Output is correct
33 Correct 119 ms 235124 KB Output is correct
34 Correct 124 ms 235504 KB Output is correct
35 Correct 126 ms 235468 KB Output is correct
36 Correct 146 ms 235504 KB Output is correct
37 Correct 163 ms 235260 KB Output is correct
38 Correct 198 ms 235228 KB Output is correct
39 Correct 146 ms 235556 KB Output is correct
40 Correct 162 ms 235308 KB Output is correct
41 Correct 132 ms 235916 KB Output is correct
42 Correct 141 ms 235888 KB Output is correct
43 Correct 142 ms 235132 KB Output is correct
44 Correct 145 ms 235080 KB Output is correct
45 Correct 153 ms 235516 KB Output is correct
46 Correct 142 ms 235472 KB Output is correct
47 Correct 166 ms 235212 KB Output is correct
48 Correct 131 ms 235192 KB Output is correct
49 Correct 129 ms 235144 KB Output is correct
50 Correct 132 ms 235524 KB Output is correct
51 Correct 141 ms 235528 KB Output is correct
52 Correct 149 ms 235476 KB Output is correct
53 Correct 102 ms 233568 KB Output is correct
54 Correct 3477 ms 237072 KB Output is correct
55 Correct 3253 ms 237388 KB Output is correct
56 Correct 3423 ms 236964 KB Output is correct
57 Correct 3698 ms 237060 KB Output is correct
58 Correct 3346 ms 237128 KB Output is correct
59 Correct 3216 ms 237372 KB Output is correct
60 Correct 3319 ms 237028 KB Output is correct
61 Correct 3876 ms 236952 KB Output is correct
62 Correct 3314 ms 236932 KB Output is correct
63 Correct 3981 ms 237024 KB Output is correct
64 Correct 1226 ms 237816 KB Output is correct
65 Correct 1240 ms 237800 KB Output is correct
66 Correct 1271 ms 237764 KB Output is correct
67 Correct 2407 ms 236672 KB Output is correct
68 Correct 2585 ms 236832 KB Output is correct
69 Execution timed out 4080 ms 236948 KB Time limit exceeded
70 Halted 0 ms 0 KB -