oj.uz

답안 #546062

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
546062 2022-04-06T07:51:33 Z blue 케이크 (CEOI14_cake) C++17
0 / 100
 1284 ms 32588 KB 
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
using namespace std;

using vi = vector<int>;
using vvi = vector<vi>;
using pii = pair<int, int>;
#define sz(x) int(x.size())

int N;
vi d;

struct segtree
{
	int Z;
	vi l, r, mxv;

	void build(int i, int L, int R)
	{
		// cerr << "build " << i << ' ' << L << ' ' << R << '\n';
		l[i] = L;
		r[i] = R;
		if(l[i] == r[i])
		{
			// cerr << "case 1\n";
			mxv[i] = d[l[i]];
		}
		else
		{
			// cerr << "case 2\n";
			build(2*i, L, (L+R)/2);
			build(2*i+1, (L+R)/2+1, R);
			mxv[i] = max(mxv[2*i], mxv[2*i+1]);
		}
		// cerr << i << " -> " <<  l[i] << ' ' << r[i] << " : " << mxv[i] << '\n';
		// cerr << "exit\n";
	}

	segtree()
	{
		Z = 4*(1+N+1);
		l = r = mxv = vi(1 + Z);

		build(1, 0, N+1);
	}

	void update(int i, int p, int v)
	{
		if(l[i] == r[i]) mxv[i] = v;
		else 
		{
			if(p <= (l[i] + r[i])/2) update(2*i, p, v);
			else update(2*i+1, p, v);

			mxv[i] = max(mxv[2*i], mxv[2*i+1]);
		}
	}

	int rangemax(int i, int L, int R)
	{
		// cerr << "rangemax : " << i << ' ' << l[i] << ' ' << r[i] << " <> " << L << ' ' << R << '\n';
		if(R < l[i] || r[i] < L) return -1'000'000'000;
		else if(L <= l[i] && r[i] <= R) return mxv[i];
		else return max(rangemax(2*i, L, R), rangemax(2*i+1, L, R));
	}

	int locatenextgeq(int p, int v)
	{
		int i = 1;
		while(l[i] != r[i])
		{
			if(p <= (l[i] + r[i])/2)
				i = 2*i;
			else
				i = 2*i + 1;
		}

		if(mxv[i] >= v) return l[i];

		while(!(l[i] != r[i] && mxv[2*i+1] >= v))
			i /= 2;

		i = 2*i + 1;

		while(l[i] != r[i])
		{
			if(mxv[2*i] >= v)
				i = 2*i;
			else
				i = 2*i + 1;
		}

		return l[i];
	}

	int locateprevgeq(int p, int v)
	{
		int i = 1;
		while(l[i] != r[i])
		{
			if(p <= (l[i] + r[i])/2)
				i = 2*i;
			else
				i = 2*i + 1;
		}

		if(mxv[i] >= v) return l[i];

		// cerr << "positional i = " << i << '\n';

		while(!(l[i] != r[i] && mxv[2*i] >= v))
		{
			i /= 2;
			// cerr << i << ' ' << l[i] << ' ' << r[i] << " : " << mxv[2*i] << '\n';

			if(i == 0) while(1);
		}

		i = 2*i;
		
		// cerr << "resulting i = " << i << '\n';

		while(l[i] != r[i])
		{
			if(mxv[2*i + 1] >= v)
				i = 2*i + 1;
			else
				i = 2*i;
		}

		return l[i];
	}
};

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int a;

	cin >> N >> a;

	d = vi(1+N+1);
	for(int i = 1; i <= N; i++) cin >> d[i];
	d[0] = d[N+1] = 1'000'000'000;

	int ld = N+1;

	segtree S;

	// cerr << "done\n";

	set<pii> elements;
	for(int i = 1; i <= N; i++)
		elements.insert({d[i], i});

	int Q;
	cin >> Q;

	// for(int i = 1; i <= N; i++) cerr << S.rangemax(1, i, i) << ' ';
	// 			cerr << '\n';

	for(int j = 1; j <= Q; j++)
	{
		char c;
		cin >> c;

		if(c == 'E')
		{
			int i, e;
			cin >> i >> e;

			elements.erase({d[i], i});
			d[i] = ++ld;

			// cerr << "new di = " << 

			vector<pii> new_elements;
			new_elements.push_back({d[i], i});

			int nld = ld + e-1;

			for(int f = 1; f <= e-1; f++)
			{
				auto x = *elements.rbegin();
				elements.erase(x);

				new_elements.push_back({nld - (f-1), x.second});
			}

			ld = nld + 1;

			for(auto x : new_elements)
			{
				S.update(1, x.second, x.first);
				elements.insert(x);
			}

			// for(int i = 1; i <= N; i++) cerr << S.rangemax(1, i, i) << ' ';
			// 	cerr << '\n';
		}
		else
		{
			int b;
			cin >> b;

			if(a == b)
			{
				cout << 0 << '\n';
				continue;
			}

			if(a <= b)
			{
				// cerr << "hello\n";
				int rmx = S.rangemax(1, a+1, b);
				int prvp = S.locateprevgeq(a-1, rmx+1);

				cout << b - prvp - 1 << '\n';
			}
			else
			{
				// cerr << "!\n";
				int rmx = S.rangemax(1, b, a-1);
				// cerr << "rmx = " << rmx << '\n';
				int nxtp = S.locatenextgeq(a+1, rmx+1);
				// cerr << "nxtp = " << nxtp << '\n';

				cout << nxtp - b - 1 << '\n';
			}
		}
	}
}

Subtask #1
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 684 ms 13840 KB Output isn't correct
2 Correct 315 ms 1820 KB Output is correct
3 Correct 441 ms 6092 KB Output is correct
4 Correct 260 ms 1312 KB Output is correct
5 Incorrect 843 ms 15112 KB Output isn't correct
6 Incorrect 637 ms 13184 KB Output isn't correct
7 Correct 490 ms 7468 KB Output is correct
8 Correct 254 ms 2772 KB Output is correct

Subtask #3
0.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 108 ms 10680 KB Output isn't correct
2 Incorrect 84 ms 10536 KB Output isn't correct
3 Correct 81 ms 10408 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Correct 237 ms 25456 KB Output is correct
6 Incorrect 219 ms 25420 KB Output isn't correct
7 Incorrect 108 ms 24984 KB Output isn't correct

Subtask #4
0.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 62 ms 1288 KB Output isn't correct
2 Incorrect 40 ms 1112 KB Output isn't correct
3 Incorrect 98 ms 5544 KB Output isn't correct
4 Incorrect 137 ms 5760 KB Output isn't correct
5 Incorrect 177 ms 2916 KB Output isn't correct
6 Incorrect 194 ms 7484 KB Output isn't correct
7 Correct 165 ms 2764 KB Output is correct
8 Correct 249 ms 11828 KB Output is correct
9 Incorrect 1284 ms 29264 KB Output isn't correct
10 Incorrect 607 ms 8920 KB Output isn't correct
11 Incorrect 772 ms 10296 KB Output isn't correct
12 Correct 1235 ms 24564 KB Output is correct
13 Incorrect 829 ms 32588 KB Output isn't correct