답안 #642104

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
642104	2022-09-18T13:29:21 Z	vovamr	Deda (COCI17_deda)	C++17	140 / 140	202 ms	17308 KB

deda

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) 	(x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }

const int N = 2e5 + 10;
int t[4 * N];

inline void upd(int v, int vl, int vr, int pos, int x) {
	chmin(t[v], x);
	if (vl == vr) return;
	int m = vl + vr >> 1;
	if (pos <= m) upd(2 * v + 1, vl, m, pos, x);
	else upd(2 * v + 2, m + 1, vr, pos, x);
}

inline int get(int v, int vl, int vr, int sf, int x) {
	if (sf > vr || t[v] > x) return iinf;
	else if (vl == vr) return vl;

	int m = vl + vr >> 1;
	if (sf > m) return get(2 * v + 2, m + 1, vr, sf, x);
	else {
		int a = get(2 * v + 1, vl, m, sf, x);
		if (a != iinf) return a;
		return get(2 * v + 2, m + 1, vr, sf, x);
	}
}

inline void solve() {
	fill(t, t + 4 * N, iinf);

	int n, q;
	cin >> n >> q;

	set<int> alive;
	for (int i = 1; i <= n; ++i) alive.insert(i);

	while (q--) {
		char c;
		cin >> c;
		if (c == 'M') {
			int x, a;
			cin >> x >> a;

			alive.erase(a);
			upd(0, 1, n, a, x);
		}
		else {
			int b, y;
			cin >> y >> b;
			
			int ans = get(0, 1, n, b, y);
			cout << (ans == iinf ? -1 : ans) << '\n';
		}
	}
}

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int q = 1; // cin >> q;
	while (q--) solve();
	cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}

Compilation message

deda.cpp: In function 'void upd(int, int, int, int, int)':
deda.cpp:29:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |  int m = vl + vr >> 1;
      |          ~~~^~~~
deda.cpp: In function 'int get(int, int, int, int, int)':
deda.cpp:38:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |  int m = vl + vr >> 1;
      |          ~~~^~~~

Subtask #1

140.0 / 140.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3412 KB	Output is correct
2	Correct	2 ms	3412 KB	Output is correct
3	Correct	4 ms	3452 KB	Output is correct
4	Correct	114 ms	17308 KB	Output is correct
5	Correct	127 ms	12068 KB	Output is correct
6	Correct	142 ms	14756 KB	Output is correct
7	Correct	202 ms	17228 KB	Output is correct