Submission #782532

#	Time	Username	Problem	Language	Result	Execution time	Memory
782532		boyliguanhan	Mechanical Doll (IOI18_doll)	C++17	100 / 100	102 ms	11692 KiB

doll

#include "doll.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> X, Y;
int N, s_state[200100];
 
int CALCTREE(int l, int r) {
	if(l >= N) return -1;
	if(r - 1 > l) {
		int mid = l+r>>1;
        X.push_back(0), Y.push_back(0);
        int pos = X.size()-1;
		Y[pos]=(CALCTREE(l, mid));
		X[pos]=(CALCTREE(mid, r));
		return -pos-1;
	}
	return 1;
}
 
void create_circuit(int M, vector<int> A) {
	vector<int> C(M+1,-1);
	A.push_back(0);
	N = A.size();
    int x = 1;
	while(x<N)
        x *= 2;
	CALCTREE(0, x);
	for(int &i : A) {
		int cur_switch = 0;
		while(cur_switch >= 0) {
			s_state[cur_switch] ^= 1;
			int &w = s_state[cur_switch] ? X[cur_switch] : Y[cur_switch];
			if(w >= 0)
                w = i, cur_switch = -1;
			else
                cur_switch = -1-w;
		}
	}
	answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'int CALCTREE(int, int)':
doll.cpp:10:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   10 |   int mid = l+r>>1;
      |             ~^~

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 18 / 18
• Subtask 6: 56 / 56