oj.uz

Submission #617267

# Submission time Handle Problem Language Result Execution time Memory
617267 2022-08-01T10:15:42 Z cheissmart Fish 2 (JOI22_fish2) C++14
60 / 100
 4000 ms 237280 KB 
// 花啊啊啊啊啊啊啊啊啊啊啊啊
#include <iostream>
#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; }
	};

	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) {
		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++) {
			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(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] < 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);
		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] < 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::upd(int, int, int)':
fish2.cpp:142:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  142 |    auto [l, r] = t[v].bad_seg[i];
      |         ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233552 KB Output is correct
2 Correct 107 ms 233536 KB Output is correct
3 Correct 114 ms 233644 KB Output is correct
4 Correct 96 ms 233548 KB Output is correct
5 Correct 96 ms 233584 KB Output is correct
6 Correct 102 ms 233516 KB Output is correct
7 Correct 94 ms 233552 KB Output is correct
8 Correct 109 ms 233476 KB Output is correct
9 Correct 105 ms 233560 KB Output is correct
10 Correct 95 ms 233492 KB Output is correct
11 Correct 99 ms 233556 KB Output is correct
12 Correct 105 ms 233508 KB Output is correct
13 Correct 113 ms 233548 KB Output is correct
14 Correct 109 ms 233548 KB Output is correct
15 Correct 101 ms 233552 KB Output is correct
16 Correct 106 ms 233528 KB Output is correct
17 Correct 109 ms 233532 KB Output is correct
18 Correct 103 ms 233692 KB Output is correct
19 Correct 102 ms 233572 KB Output is correct
20 Correct 98 ms 233512 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233492 KB Output is correct
2 Correct 129 ms 234948 KB Output is correct
3 Correct 129 ms 234868 KB Output is correct
4 Correct 129 ms 234980 KB Output is correct
5 Correct 127 ms 234844 KB Output is correct
6 Correct 128 ms 234916 KB Output is correct
7 Correct 139 ms 234832 KB Output is correct
8 Correct 120 ms 234924 KB Output is correct
9 Correct 115 ms 234880 KB Output is correct
10 Correct 135 ms 234892 KB Output is correct
11 Correct 137 ms 234880 KB Output is correct
12 Correct 124 ms 234868 KB Output is correct
13 Correct 116 ms 234956 KB Output is correct
14 Correct 141 ms 234932 KB Output is correct
15 Correct 132 ms 234888 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233552 KB Output is correct
2 Correct 107 ms 233536 KB Output is correct
3 Correct 114 ms 233644 KB Output is correct
4 Correct 96 ms 233548 KB Output is correct
5 Correct 96 ms 233584 KB Output is correct
6 Correct 102 ms 233516 KB Output is correct
7 Correct 94 ms 233552 KB Output is correct
8 Correct 109 ms 233476 KB Output is correct
9 Correct 105 ms 233560 KB Output is correct
10 Correct 95 ms 233492 KB Output is correct
11 Correct 99 ms 233556 KB Output is correct
12 Correct 105 ms 233508 KB Output is correct
13 Correct 113 ms 233548 KB Output is correct
14 Correct 109 ms 233548 KB Output is correct
15 Correct 101 ms 233552 KB Output is correct
16 Correct 106 ms 233528 KB Output is correct
17 Correct 109 ms 233532 KB Output is correct
18 Correct 103 ms 233692 KB Output is correct
19 Correct 102 ms 233572 KB Output is correct
20 Correct 98 ms 233512 KB Output is correct
21 Correct 96 ms 233492 KB Output is correct
22 Correct 129 ms 234948 KB Output is correct
23 Correct 129 ms 234868 KB Output is correct
24 Correct 129 ms 234980 KB Output is correct
25 Correct 127 ms 234844 KB Output is correct
26 Correct 128 ms 234916 KB Output is correct
27 Correct 139 ms 234832 KB Output is correct
28 Correct 120 ms 234924 KB Output is correct
29 Correct 115 ms 234880 KB Output is correct
30 Correct 135 ms 234892 KB Output is correct
31 Correct 137 ms 234880 KB Output is correct
32 Correct 124 ms 234868 KB Output is correct
33 Correct 116 ms 234956 KB Output is correct
34 Correct 141 ms 234932 KB Output is correct
35 Correct 132 ms 234888 KB Output is correct
36 Correct 158 ms 234956 KB Output is correct
37 Correct 187 ms 234956 KB Output is correct
38 Correct 170 ms 234952 KB Output is correct
39 Correct 164 ms 234936 KB Output is correct
40 Correct 193 ms 234880 KB Output is correct
41 Correct 127 ms 234828 KB Output is correct
42 Correct 141 ms 234956 KB Output is correct
43 Correct 149 ms 234920 KB Output is correct
44 Correct 173 ms 234944 KB Output is correct
45 Correct 170 ms 234912 KB Output is correct
46 Correct 175 ms 235036 KB Output is correct
47 Correct 163 ms 234960 KB Output is correct
48 Correct 123 ms 234868 KB Output is correct
49 Correct 139 ms 234904 KB Output is correct
50 Correct 147 ms 234956 KB Output is correct
51 Correct 137 ms 234956 KB Output is correct
52 Correct 139 ms 234856 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233492 KB Output is correct
2 Correct 129 ms 234948 KB Output is correct
3 Correct 129 ms 234868 KB Output is correct
4 Correct 129 ms 234980 KB Output is correct
5 Correct 127 ms 234844 KB Output is correct
6 Correct 128 ms 234916 KB Output is correct
7 Correct 139 ms 234832 KB Output is correct
8 Correct 120 ms 234924 KB Output is correct
9 Correct 115 ms 234880 KB Output is correct
10 Correct 135 ms 234892 KB Output is correct
11 Correct 137 ms 234880 KB Output is correct
12 Correct 124 ms 234868 KB Output is correct
13 Correct 116 ms 234956 KB Output is correct
14 Correct 141 ms 234932 KB Output is correct
15 Correct 132 ms 234888 KB Output is correct
16 Correct 103 ms 233520 KB Output is correct
17 Correct 3959 ms 235416 KB Output is correct
18 Correct 3596 ms 237280 KB Output is correct
19 Execution timed out 4101 ms 236992 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233492 KB Output is correct
2 Correct 129 ms 234948 KB Output is correct
3 Correct 129 ms 234868 KB Output is correct
4 Correct 129 ms 234980 KB Output is correct
5 Correct 127 ms 234844 KB Output is correct
6 Correct 128 ms 234916 KB Output is correct
7 Correct 139 ms 234832 KB Output is correct
8 Correct 120 ms 234924 KB Output is correct
9 Correct 115 ms 234880 KB Output is correct
10 Correct 135 ms 234892 KB Output is correct
11 Correct 137 ms 234880 KB Output is correct
12 Correct 124 ms 234868 KB Output is correct
13 Correct 116 ms 234956 KB Output is correct
14 Correct 141 ms 234932 KB Output is correct
15 Correct 132 ms 234888 KB Output is correct
16 Correct 133 ms 233516 KB Output is correct
17 Correct 675 ms 235096 KB Output is correct
18 Correct 634 ms 234964 KB Output is correct
19 Correct 495 ms 235120 KB Output is correct
20 Correct 449 ms 235276 KB Output is correct
21 Correct 594 ms 234896 KB Output is correct
22 Correct 598 ms 234956 KB Output is correct
23 Correct 556 ms 235016 KB Output is correct
24 Correct 556 ms 235048 KB Output is correct
25 Correct 518 ms 235096 KB Output is correct
26 Correct 281 ms 235164 KB Output is correct
27 Correct 367 ms 234968 KB Output is correct
28 Correct 358 ms 235164 KB Output is correct
29 Correct 291 ms 234996 KB Output is correct
30 Correct 329 ms 234992 KB Output is correct
31 Correct 414 ms 235096 KB Output is correct
32 Correct 493 ms 235004 KB Output is correct
33 Correct 315 ms 234980 KB Output is correct
34 Correct 473 ms 235196 KB Output is correct
35 Correct 332 ms 235292 KB Output is correct
36 Correct 441 ms 235232 KB Output is correct
37 Correct 395 ms 235084 KB Output is correct
38 Correct 275 ms 235200 KB Output is correct
39 Correct 307 ms 235196 KB Output is correct
40 Correct 217 ms 235360 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 233552 KB Output is correct
2 Correct 107 ms 233536 KB Output is correct
3 Correct 114 ms 233644 KB Output is correct
4 Correct 96 ms 233548 KB Output is correct
5 Correct 96 ms 233584 KB Output is correct
6 Correct 102 ms 233516 KB Output is correct
7 Correct 94 ms 233552 KB Output is correct
8 Correct 109 ms 233476 KB Output is correct
9 Correct 105 ms 233560 KB Output is correct
10 Correct 95 ms 233492 KB Output is correct
11 Correct 99 ms 233556 KB Output is correct
12 Correct 105 ms 233508 KB Output is correct
13 Correct 113 ms 233548 KB Output is correct
14 Correct 109 ms 233548 KB Output is correct
15 Correct 101 ms 233552 KB Output is correct
16 Correct 106 ms 233528 KB Output is correct
17 Correct 109 ms 233532 KB Output is correct
18 Correct 103 ms 233692 KB Output is correct
19 Correct 102 ms 233572 KB Output is correct
20 Correct 98 ms 233512 KB Output is correct
21 Correct 96 ms 233492 KB Output is correct
22 Correct 129 ms 234948 KB Output is correct
23 Correct 129 ms 234868 KB Output is correct
24 Correct 129 ms 234980 KB Output is correct
25 Correct 127 ms 234844 KB Output is correct
26 Correct 128 ms 234916 KB Output is correct
27 Correct 139 ms 234832 KB Output is correct
28 Correct 120 ms 234924 KB Output is correct
29 Correct 115 ms 234880 KB Output is correct
30 Correct 135 ms 234892 KB Output is correct
31 Correct 137 ms 234880 KB Output is correct
32 Correct 124 ms 234868 KB Output is correct
33 Correct 116 ms 234956 KB Output is correct
34 Correct 141 ms 234932 KB Output is correct
35 Correct 132 ms 234888 KB Output is correct
36 Correct 158 ms 234956 KB Output is correct
37 Correct 187 ms 234956 KB Output is correct
38 Correct 170 ms 234952 KB Output is correct
39 Correct 164 ms 234936 KB Output is correct
40 Correct 193 ms 234880 KB Output is correct
41 Correct 127 ms 234828 KB Output is correct
42 Correct 141 ms 234956 KB Output is correct
43 Correct 149 ms 234920 KB Output is correct
44 Correct 173 ms 234944 KB Output is correct
45 Correct 170 ms 234912 KB Output is correct
46 Correct 175 ms 235036 KB Output is correct
47 Correct 163 ms 234960 KB Output is correct
48 Correct 123 ms 234868 KB Output is correct
49 Correct 139 ms 234904 KB Output is correct
50 Correct 147 ms 234956 KB Output is correct
51 Correct 137 ms 234956 KB Output is correct
52 Correct 139 ms 234856 KB Output is correct
53 Correct 103 ms 233520 KB Output is correct
54 Correct 3959 ms 235416 KB Output is correct
55 Correct 3596 ms 237280 KB Output is correct
56 Execution timed out 4101 ms 236992 KB Time limit exceeded
57 Halted 0 ms 0 KB -