Submission #463709

#	Time	Username	Problem	Language	Result	Execution time	Memory
463709		tomsyd	Mechanical Doll (IOI18_doll)	C++17	0 / 100	8 ms	812 KiB

doll

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

void create_circuit(int M, vector<int> A) {
	if (M == A.size()){
		vector<int> C(M + 1);
		C[0] = A[0];
		int N = A.size();
		for (int i = 0; i<N-1; ++i) {
			C[A[i]] = A[i+1];
		}
		C[A[N-1]] = 0;
		vector<int> X,Y;
		answer(C, X, Y);
	}
	else if (M == 1){
		int pow2 = 1, N = A.size();
		while (pow2 < N) pow2 <<= 1;
		vector<int> X(2*pow2),Y(2*pow2);
		for (int i=0; i<pow2; ++i){
			X[i] = 2*(i+1)+1;
			Y[i] = 2*(i+1)+2;
		}
		while (pow2 > N+1){
			pow2--;
			X.pop_back();
			Y.pop_back();
		}
		vector<int> C(M+1);
		C[0] = 1;
		C[1] = -1;
		X[X.size()-1] = 1;
		Y[Y.size()-1] = 0;
		int idx = X.size()-2, crt = N-1;
		while (crt > 0){
			X[idx] = 1;
			Y[idx] = 1;
			idx--;
			crt -= 2;
		}
		answer(C,X,Y);
	}
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:6:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |  if (M == A.size()){
      |      ~~^~~~~~~~~~~

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