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답안 #616902

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
616902 2022-08-01T07:35:32 Z cheissmart Fish 2 (JOI22_fish2) C++14
60 / 100
 4000 ms 253424 KB 
// 花啊啊啊啊啊啊啊啊啊啊啊啊
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#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;
typedef V<int> vi;

const int INF = 1e9 + 7, N = 1e5 + 7;
const ll oo = 1e18;

ll a[N];
int n;

namespace cover {
	int t[N * 4];
	char tag[N * 4];
	int sum(int v, int len) {
		return tag[v] ? len : t[v];
	}
	void _add(int l, int r, int x, int v = 1, int tl = 1, int tr = n + 1) {
		if(l <= tl && tr <= r) {
			tag[v] += x;
			return;
		}
		int tm = (tl + tr) / 2;
		if(l < tm) _add(l, r, x, v * 2, tl, tm);
		if(r > tm) _add(l, r, x, v * 2 + 1, tm, tr);
		t[v] = sum(v * 2, tm - tl) + sum(v * 2 + 1, tr - tm);
	}
	void add(int l, int r, int x) {
		if(l == 1 && r == n + 1) return;
		_add(l, r, x);
	}
	int qry(int l, int r, int v = 1, int tl = 1, int tr = n + 1) {
		if(l <= tl && tr <= r)
			return sum(v, tr - tl);
		int tm = (tl + tr) / 2, res = 0;
		if(l < tm) res += qry(l, r, v * 2, tl, tm);
		if(r > tm) res += qry(l, r, v * 2 + 1, tm, tr);
		return res;
	}
}

namespace seg {
	template<class A, class B> struct DS {
		pair<A, B> a[31];
		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; }
	};

	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) {
	    return (tl + tr - 1) | (tl + 1 != tr);
	}

	void pull(int v, int lc, int rc, int posl = INF, int posr = 0) {
		for(int i = 0; i < t[lc].bad_pref.sz; i++)
			t[v].bad_pref.PB(t[lc].bad_pref[i]);
		for(int i = 0; i < t[rc].bad_suff.sz; i++)
			t[v].bad_suff.PB(t[rc].bad_suff[i]);

		for(int i = 0; i < t[rc].bad_pref.sz; i++) {
			// auto[pos1, sum1] = t[rc].bad_pref[i];
			#define pos1 t[rc].bad_pref[i].F
			#define sum1 t[rc].bad_pref[i].S
			if(sum1 + t[lc].sum < a[pos1 + 1])
				t[v].bad_pref.EB(pos1, sum1 + t[lc].sum);
			#undef pos1
			#undef sum1
		}
		for(int i = 0; i < t[lc].bad_suff.sz; i++) {
			// auto[pos1, sum1] = t[lc].bad_suff[i];
			#define pos1 t[lc].bad_suff[i].F
			#define sum1 t[lc].bad_suff[i].S
			if(sum1 + t[rc].sum < a[pos1 - 1])
				t[v].bad_suff.EB(pos1, sum1 + t[rc].sum);
			#undef pos1
			#undef 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(he.S + be.S < min(a[he.F - 1], a[be.F + 1])) {
				t[v].bad_seg.EB(he.F, be.F);
				cover::add(he.F, be.F + 1, 1);
			}
			if(a[he.F - 1] < a[be.F + 1])
				i++;
			else
				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])
				t[v].bad_pref.EB(tl, a[tl]);
			if(a[tl] < 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, id(tl, tm), id(tm, tr));
		}
	}
	void upd(int pos, int tl = 1, int tr = n + 1) {
		int v = id(tl, tr);
		int j = 0;
		for(int i = 0; i < t[v].bad_seg.sz; i++) {
			auto [l, r] = t[v].bad_seg[i];
			if(r < pos - 1 || l > pos + 1) {
				t[v].bad_seg[j++] = t[v].bad_seg[i];
			} else {
				cover::add(l, r + 1, -1);
			}
		}
		t[v].bad_seg.resize(j);

		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])
				t[v].bad_pref.EB(tl, a[tl]);
			if(a[tl] < 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, 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
// #define gc getchar
inline int readInt () {
	int c = gc();
	while(!isdigit(c)) c = gc();
	int res = c - '0';
	while(true) {
		c = gc();
		if(isdigit(c)) res = res * 10 + c - '0';
		else break;
	}
	return res;
}

signed main()
{
	IO_OP;

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

	seg::build();

	int q;
	// cin >> q;
	q = readInt();
	while(q--) {
		int op;
		// cin >> op;
		op = readInt();
		if(op == 1) {
			int x, y;
			// cin >> x >> y;
			x = readInt(), y = readInt();
			upd(x, y);
		} else {
			int l, r;
			// cin >> l >> r;
			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);

			cout << r - l + 1 - cover::qry(l, r + 1) << '\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::upd(int, int, int)':
fish2.cpp:146:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  146 |    auto [l, r] = t[v].bad_seg[i];
      |         ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249172 KB Output is correct
2 Correct 114 ms 249252 KB Output is correct
3 Correct 110 ms 249216 KB Output is correct
4 Correct 107 ms 249236 KB Output is correct
5 Correct 109 ms 249212 KB Output is correct
6 Correct 110 ms 249252 KB Output is correct
7 Correct 110 ms 249252 KB Output is correct
8 Correct 110 ms 249252 KB Output is correct
9 Correct 115 ms 249324 KB Output is correct
10 Correct 114 ms 249236 KB Output is correct
11 Correct 107 ms 249276 KB Output is correct
12 Correct 107 ms 249252 KB Output is correct
13 Correct 108 ms 249164 KB Output is correct
14 Correct 106 ms 249276 KB Output is correct
15 Correct 107 ms 249376 KB Output is correct
16 Correct 108 ms 249228 KB Output is correct
17 Correct 116 ms 249204 KB Output is correct
18 Correct 119 ms 249172 KB Output is correct
19 Correct 117 ms 249372 KB Output is correct
20 Correct 128 ms 249240 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249244 KB Output is correct
2 Correct 164 ms 251356 KB Output is correct
3 Correct 143 ms 251136 KB Output is correct
4 Correct 144 ms 251304 KB Output is correct
5 Correct 149 ms 251316 KB Output is correct
6 Correct 134 ms 251644 KB Output is correct
7 Correct 138 ms 251052 KB Output is correct
8 Correct 135 ms 251700 KB Output is correct
9 Correct 137 ms 250912 KB Output is correct
10 Correct 138 ms 251312 KB Output is correct
11 Correct 142 ms 251092 KB Output is correct
12 Correct 142 ms 250948 KB Output is correct
13 Correct 145 ms 250968 KB Output is correct
14 Correct 140 ms 251348 KB Output is correct
15 Correct 157 ms 251312 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249172 KB Output is correct
2 Correct 114 ms 249252 KB Output is correct
3 Correct 110 ms 249216 KB Output is correct
4 Correct 107 ms 249236 KB Output is correct
5 Correct 109 ms 249212 KB Output is correct
6 Correct 110 ms 249252 KB Output is correct
7 Correct 110 ms 249252 KB Output is correct
8 Correct 110 ms 249252 KB Output is correct
9 Correct 115 ms 249324 KB Output is correct
10 Correct 114 ms 249236 KB Output is correct
11 Correct 107 ms 249276 KB Output is correct
12 Correct 107 ms 249252 KB Output is correct
13 Correct 108 ms 249164 KB Output is correct
14 Correct 106 ms 249276 KB Output is correct
15 Correct 107 ms 249376 KB Output is correct
16 Correct 108 ms 249228 KB Output is correct
17 Correct 116 ms 249204 KB Output is correct
18 Correct 119 ms 249172 KB Output is correct
19 Correct 117 ms 249372 KB Output is correct
20 Correct 128 ms 249240 KB Output is correct
21 Correct 109 ms 249244 KB Output is correct
22 Correct 164 ms 251356 KB Output is correct
23 Correct 143 ms 251136 KB Output is correct
24 Correct 144 ms 251304 KB Output is correct
25 Correct 149 ms 251316 KB Output is correct
26 Correct 134 ms 251644 KB Output is correct
27 Correct 138 ms 251052 KB Output is correct
28 Correct 135 ms 251700 KB Output is correct
29 Correct 137 ms 250912 KB Output is correct
30 Correct 138 ms 251312 KB Output is correct
31 Correct 142 ms 251092 KB Output is correct
32 Correct 142 ms 250948 KB Output is correct
33 Correct 145 ms 250968 KB Output is correct
34 Correct 140 ms 251348 KB Output is correct
35 Correct 157 ms 251312 KB Output is correct
36 Correct 174 ms 251352 KB Output is correct
37 Correct 174 ms 251160 KB Output is correct
38 Correct 182 ms 251132 KB Output is correct
39 Correct 166 ms 251344 KB Output is correct
40 Correct 197 ms 251128 KB Output is correct
41 Correct 158 ms 251836 KB Output is correct
42 Correct 154 ms 251724 KB Output is correct
43 Correct 170 ms 250932 KB Output is correct
44 Correct 189 ms 251024 KB Output is correct
45 Correct 192 ms 251380 KB Output is correct
46 Correct 184 ms 251320 KB Output is correct
47 Correct 159 ms 251040 KB Output is correct
48 Correct 142 ms 250996 KB Output is correct
49 Correct 156 ms 251024 KB Output is correct
50 Correct 152 ms 251336 KB Output is correct
51 Correct 162 ms 251416 KB Output is correct
52 Correct 189 ms 251400 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249244 KB Output is correct
2 Correct 164 ms 251356 KB Output is correct
3 Correct 143 ms 251136 KB Output is correct
4 Correct 144 ms 251304 KB Output is correct
5 Correct 149 ms 251316 KB Output is correct
6 Correct 134 ms 251644 KB Output is correct
7 Correct 138 ms 251052 KB Output is correct
8 Correct 135 ms 251700 KB Output is correct
9 Correct 137 ms 250912 KB Output is correct
10 Correct 138 ms 251312 KB Output is correct
11 Correct 142 ms 251092 KB Output is correct
12 Correct 142 ms 250948 KB Output is correct
13 Correct 145 ms 250968 KB Output is correct
14 Correct 140 ms 251348 KB Output is correct
15 Correct 157 ms 251312 KB Output is correct
16 Correct 114 ms 249236 KB Output is correct
17 Execution timed out 4057 ms 252744 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249244 KB Output is correct
2 Correct 164 ms 251356 KB Output is correct
3 Correct 143 ms 251136 KB Output is correct
4 Correct 144 ms 251304 KB Output is correct
5 Correct 149 ms 251316 KB Output is correct
6 Correct 134 ms 251644 KB Output is correct
7 Correct 138 ms 251052 KB Output is correct
8 Correct 135 ms 251700 KB Output is correct
9 Correct 137 ms 250912 KB Output is correct
10 Correct 138 ms 251312 KB Output is correct
11 Correct 142 ms 251092 KB Output is correct
12 Correct 142 ms 250948 KB Output is correct
13 Correct 145 ms 250968 KB Output is correct
14 Correct 140 ms 251348 KB Output is correct
15 Correct 157 ms 251312 KB Output is correct
16 Correct 121 ms 249212 KB Output is correct
17 Correct 918 ms 252448 KB Output is correct
18 Correct 714 ms 252840 KB Output is correct
19 Correct 707 ms 252248 KB Output is correct
20 Correct 554 ms 252852 KB Output is correct
21 Correct 828 ms 252376 KB Output is correct
22 Correct 685 ms 252720 KB Output is correct
23 Correct 692 ms 252236 KB Output is correct
24 Correct 775 ms 252780 KB Output is correct
25 Correct 710 ms 252244 KB Output is correct
26 Correct 367 ms 253424 KB Output is correct
27 Correct 429 ms 253360 KB Output is correct
28 Correct 446 ms 252624 KB Output is correct
29 Correct 382 ms 253388 KB Output is correct
30 Correct 394 ms 253108 KB Output is correct
31 Correct 562 ms 252720 KB Output is correct
32 Correct 717 ms 252720 KB Output is correct
33 Correct 420 ms 252396 KB Output is correct
34 Correct 600 ms 252936 KB Output is correct
35 Correct 366 ms 252732 KB Output is correct
36 Correct 542 ms 252864 KB Output is correct
37 Correct 541 ms 252388 KB Output is correct
38 Correct 350 ms 252652 KB Output is correct
39 Correct 443 ms 253064 KB Output is correct
40 Correct 251 ms 253088 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 109 ms 249172 KB Output is correct
2 Correct 114 ms 249252 KB Output is correct
3 Correct 110 ms 249216 KB Output is correct
4 Correct 107 ms 249236 KB Output is correct
5 Correct 109 ms 249212 KB Output is correct
6 Correct 110 ms 249252 KB Output is correct
7 Correct 110 ms 249252 KB Output is correct
8 Correct 110 ms 249252 KB Output is correct
9 Correct 115 ms 249324 KB Output is correct
10 Correct 114 ms 249236 KB Output is correct
11 Correct 107 ms 249276 KB Output is correct
12 Correct 107 ms 249252 KB Output is correct
13 Correct 108 ms 249164 KB Output is correct
14 Correct 106 ms 249276 KB Output is correct
15 Correct 107 ms 249376 KB Output is correct
16 Correct 108 ms 249228 KB Output is correct
17 Correct 116 ms 249204 KB Output is correct
18 Correct 119 ms 249172 KB Output is correct
19 Correct 117 ms 249372 KB Output is correct
20 Correct 128 ms 249240 KB Output is correct
21 Correct 109 ms 249244 KB Output is correct
22 Correct 164 ms 251356 KB Output is correct
23 Correct 143 ms 251136 KB Output is correct
24 Correct 144 ms 251304 KB Output is correct
25 Correct 149 ms 251316 KB Output is correct
26 Correct 134 ms 251644 KB Output is correct
27 Correct 138 ms 251052 KB Output is correct
28 Correct 135 ms 251700 KB Output is correct
29 Correct 137 ms 250912 KB Output is correct
30 Correct 138 ms 251312 KB Output is correct
31 Correct 142 ms 251092 KB Output is correct
32 Correct 142 ms 250948 KB Output is correct
33 Correct 145 ms 250968 KB Output is correct
34 Correct 140 ms 251348 KB Output is correct
35 Correct 157 ms 251312 KB Output is correct
36 Correct 174 ms 251352 KB Output is correct
37 Correct 174 ms 251160 KB Output is correct
38 Correct 182 ms 251132 KB Output is correct
39 Correct 166 ms 251344 KB Output is correct
40 Correct 197 ms 251128 KB Output is correct
41 Correct 158 ms 251836 KB Output is correct
42 Correct 154 ms 251724 KB Output is correct
43 Correct 170 ms 250932 KB Output is correct
44 Correct 189 ms 251024 KB Output is correct
45 Correct 192 ms 251380 KB Output is correct
46 Correct 184 ms 251320 KB Output is correct
47 Correct 159 ms 251040 KB Output is correct
48 Correct 142 ms 250996 KB Output is correct
49 Correct 156 ms 251024 KB Output is correct
50 Correct 152 ms 251336 KB Output is correct
51 Correct 162 ms 251416 KB Output is correct
52 Correct 189 ms 251400 KB Output is correct
53 Correct 114 ms 249236 KB Output is correct
54 Execution timed out 4057 ms 252744 KB Time limit exceeded
55 Halted 0 ms 0 KB -