Submission #380356

#	Time	Username	Problem	Language	Result	Execution time	Memory
380356		ritul_kr_singh	Deda (COCI17_deda)	C++17	140 / 140	137 ms	8940 KiB

deda

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << ' ' <<
#define nl << '\n'

struct segtree{
	int sz = 1, lim; const int ID = 1e10;
	vector<int> a;
	segtree(int n){
		while(sz < n) sz *= 2;
		lim = n;
		a.assign(2*sz, ID);
	}
	void update(int i, int val, int x, int lx, int rx){
		if(rx-lx==1) return void(a[x] = val);
		int mx = (lx+rx)/2;
		if(i<mx) update(i, val, 2*x+1, lx, mx);
		else update(i, val, 2*x+2, mx, rx);
		a[x] = min(a[2*x+1], a[2*x+2]);
	}
	void update(int i, int val){ update(i, val, 0, 0, sz); }
	int get(int l, int val, int x, int lx, int rx){
		if(rx<=l) return ID;
		if(rx-lx==1) return (lx>=l ? lx : ID);
		int mx = (lx+rx)/2;
		int res = ID;
		if(a[2*x+1]<=val) res = get(l, val, 2*x+1, lx, mx);
		if(res==ID and a[2*x+2]<=val) res = get(l, val, 2*x+2, mx, rx);
		return res;
	}
	int get(int l, int val){
		int res = get(l, val, 0, 0, sz);
		return (res==ID or res>=lim? -1 : res+1);
	}
};
 
signed main(){
	ios_base::sync_with_stdio(false); cin.tie(nullptr);
	int n, q; cin >> n >> q;
	segtree st(n);
	char c;
	int x, y;
	while(q--){
		cin >> c >> x >> y;
		if(c=='M') st.update(y-1, x);
		else cout << st.get(y-1, x) nl;
	}
}

• Subtask 1: 140 / 140