답안 #229655

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
229655	2020-05-05T17:50:10 Z	vee_nits123	Deda (COCI17_deda)	C++14	140 / 140	136 ms	11204 KB

deda

#include <iostream>
#include <climits>
#include <cstring>

using namespace std;

#define int long long int
#define endl '\n'

const int N = 2e5 + 5;
const int M = 1e9 + 1;
int tree[4 * N];

void update(int ind, int val, int st, int end, int pos) {
	//if (st > end || ind > end || ind < st) return ;
	if (st == end && st == ind) {
		tree[pos] = val;
		return ;
	}
	int mid = (st + end) / 2;
	if(ind<=mid)
		update(ind, val, st, mid, 2 * pos);
	else
		update(ind, val, mid + 1, end, 2 * pos + 1);
	tree[pos] = min(tree[2 * pos], tree[2 * pos + 1]);
	return ;
}

int query(int l, int r, int val, int st, int end, int pos) {

	if (st == l && r == end && l == r)
		return l;
	int mid = (st + end) / 2;
	int a = -1, b = -1;
	if (tree[2 * pos] <= val && l <= mid) {
		a = query(l, min(mid, r), val, st, mid, 2 * pos);
	}
	if (a == -1 && tree[2 * pos + 1] <= val && r > mid) {
		b = query(max(l, mid + 1), r, val, mid + 1, end, 2 * pos + 1);
	}
	return a == -1 ? b : (b == -1 ? a : min(a, b));
}

int32_t main() {

	ios_base:: sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);



	// code starts

	//int t;cin>>t;while(t--){}

	fill(tree, tree + 4 * N, M);

	int n, q; cin >> n >> q;
	while (q--) {
		char x;
		int val, ind; cin >> x >> val >> ind;
		if (x == 'M') {
			update(ind, val, 1, n, 1);
		}
		else {
			cout << query(ind, n, val, 1, n, 1) << endl;
		}
	}


	return 0;
}

Subtask #1

140.0 / 140.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	6656 KB	Output is correct
2	Correct	7 ms	6528 KB	Output is correct
3	Correct	10 ms	6656 KB	Output is correct
4	Correct	100 ms	11128 KB	Output is correct
5	Correct	105 ms	10616 KB	Output is correct
6	Correct	119 ms	11000 KB	Output is correct
7	Correct	136 ms	11204 KB	Output is correct