Submission #1122481

#	Time	Username	Problem	Language	Result	Execution time	Memory
1122481		thelegendary08	Trampoline (info1cup20_trampoline)	C++17	0 / 100	2095 ms	61032 KiB

trampoline

#include<bits/stdc++.h>
#define pb push_back
#define int long long
#define vi vector<int>
#define vvi vector<vector<int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vb vector<bool>
#define mii map<int,int>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define in(a) int a; cin>>a
#define in2(a,b) int a,b; cin>>a>>b
#define in3(a,b,c) int a,b,c; cin>>a>>b>>c
#define in4(a,b,c,d) int a,b,c,d; cin>>a>>b>>c>>d
#define vin(v,n); vi v(n); f0r(i,n){cin>>v[i];}
#define out(a) cout<<a<<'\n'
#define out2(a,b) cout<<a<<' '<<b<<'\n'
#define out3(a,b,c) cout<<a<<' '<<b<<' '<<c<<'\n'
#define out4(a,b,c,d) cout<<a<<' '<<b<<' '<<c<<' '<<d<<'\n'
#define vout(v) cout<<#v<<' '; for(auto u : v){cout<<u<<' ';} cout<<'\n'
#define dout(a) cout<<a<<' '<<#a<<'\n'
#define dout2(a,b) cout<<a<<' '<<#a<<' '<<b<<' '<<#b<<'\n'
#define yn(x); if(x){cout<<"Yes"<<'\n';}else{cout<<"No"<<'\n';}
const int leg = 1e9 + 7;
const int mod = 998244353;
using namespace std;
bool cmp(pii a, pii b){
	return a.first < b.first;
}
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	//ifstream cin(".in");
	//ofstream cout(".out");
	in3(r,c,n);
	map<int, set<pii>>m;
	vpii v;
	f0r(i, n){
		in2(a,b);
		v.pb({a,b});
		m[a].insert({b,i});
	}
	vi nxt(n, -1);
	f0r(i,n){
		auto cur = lower_bound(all(m[v[i].first + 1]), make_pair(v[i].second, -1), cmp);
		if(cur != m[v[i].first + 1].end()){
			nxt[i] = (*cur).second;
		}
	}
	//vout(nxt);
	
	vvi jmp(n, vi(18));
	f0r(i,n){
		jmp[i][0] = nxt[i];
	}
	FOR(i, 1, 18){
		f0r(j, n){
			if(jmp[j][i-1] != -1)jmp[j][i] = jmp[jmp[j][i-1]][i-1];
			else jmp[j][i] = -1;
		}
	}
	
	in(q);
	while(q--){
		in4(a,b,c,d);
		if(a == c){
			yn(b <= d);
		}
		else{
			//get from nearest tramp at a to tramp at c-1
			auto it = lower_bound(all(m[a]), make_pair(b, -1), cmp);
			if(it == m[a].end()){
				out("No");
			}
			else{
				int cur = (*it).second;
				int jumps = c - a - 1;
				f0r(i, 18){
					if((1 << i) & jumps){
						cur = jmp[cur][i];
					}
				}
				// out(cur);
				if(cur == -1)out("No");
				else{
					yn(v[cur].second <= d);
				}
			}
		}
	}
	
}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27