Submission #675528

#	Time	Username	Problem	Language	Result	Execution time	Memory
675528		QwertyPi	CATS (NOI14_cats)	C++14	25 / 25	312 ms	8016 KiB

cats

#include <bits/stdc++.h>
#define int long long
using namespace std;

deque<int> S1, S2;

bool fl;
void out(){
	cout << "*****************" << endl;
	cout << "S1: "; for(auto i : S1) cout << (i ^ fl) << ' '; cout << endl;
	cout << "S2: "; for(auto i : S2) cout << i << ' '; cout << endl;
}

int f(int X, int L, int N){
	int COUNTER = X; 
	S1.clear(); S2.clear();
	fl = false;
	while(COUNTER){
		// out();
		if(S1.empty()) S1.push_front(0);
		S2.push_back(S1.back() ^ fl); S1.pop_back();
		fl ^= 1;
		if(S2.back() > L){
			COUNTER--;
			if(COUNTER == 0) return S2.back();
		}else{
			if(S2.size() == 1) S2.push_front(0);
			S2.back() += N * 2;
			S1.push_back(S2.back() ^ fl);
			S1.push_back(S2.back() ^ fl);
			S2.pop_back();
			S2.pop_back();
		}
	}
}

int g(int x, int l, int n){
	x--;
	int Ba = (l / (n * 2) + 1) * n * 2;
	
	if(x % 4 == 1 || x % 4 == 2) Ba ^= 1;
	int d = l / (n * 2);
	for(int b = 2; b <= min(60LL, d + 1); b++){
		if(x & (1LL << b)) Ba ^= 1;
	}
	return Ba;
}

int32_t main(){
	int q; cin >> q;
	for(int i = 0; i < q; i++){
		int x, l, n; cin >> x >> l >> n;
		cout << g(x, l, n) << endl;
	}
}

Compilation message (stderr)

cats.cpp: In function 'long long int f(long long int, long long int, long long int)':
cats.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type]
   35 | }
      | ^

• Subtask 1: 4 / 4
• Subtask 2: 4 / 4
• Subtask 3: 4 / 4
• Subtask 4: 4 / 4
• Subtask 5: 4 / 4
• Subtask 6: 5 / 5