Submission #713773

#	Time	Username	Problem	Language	Result	Execution time	Memory
713773		Astrayt	Mechanical Doll (IOI18_doll)	C++17	2 / 100	481 ms	5244 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back

void create_circuit(int M, vector<int> A) {
	int N = A.size(), cnt = -1;
 	vector<int> C(M + 1, -1e9), X, Y, S;
	C[0] = A[0];
	for (int i = 0; i < N; ++i) {
		int cur = C[A[i]];
		if(cur == -1e9) C[A[i]] = A[i + 1];
		else{
			int pre = A[i];
			while(cur < 0){
				pre = cur;
				if(S[-cur - 1])	cur = Y[-cur - 1];
				else cur = X[-cur - 1];
				S[-pre - 1] ^= 1;
			}
			if(cur == A[i + 1]) continue;
			if(pre == A[i]){
				C[A[i]] = cnt--;
				X.pb(cur);
				Y.pb(A[i + 1]);
				S.pb(0);
			}else{
				if(S[-pre - 1]){
					X[-pre - 1] = cnt--;
					X.pb(cur);
					Y.pb(A[i + 1]);
				}else{
					Y[-pre - 1] = cnt--;
					X.pb(cur);
					Y.pb(A[i + 1]);
				}
				S.pb(1);
			}
		}
	}
	if(C[A[N - 1]] == -1e9) C[A[N - 1]] = 0;
	else{
		int cur = C[A[N - 1]], pre = A[N - 1];
		while(cur < 0){
			pre = cur;
			if(S[-cur - 1]) cur = Y[-cur - 1];
			else cur = X[-cur - 1];
			S[-pre - 1] ^= 1;
		}
		if(pre == A[N - 1]){
			X.pb(cur);
			Y.pb(0);
			S.pb(1);
		}else{
			if(S[-pre - 1]){
				X[-pre - 1] = cnt--;
				X.pb(cur);
				Y.pb(0);
			}else{
				Y[-pre - 1] = cnt--;
				X.pb(cur);
				Y.pb(0);
			}
		}
	}
	for(auto &x:C) x = (x == -1e9 ? 1 : x), cerr << x << ' ';
	cerr << '\n';
	for(auto x:X) cerr << x << ' ';
	cerr << '\n';
	for(auto x:Y) cerr << x << ' ';
	cerr << '\n';
 	answer(C, X, Y);
}

• Subtask 1: 2 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56