#include "doll.h" #include<bits/stdc++.h> using namespace std; void create_circuit(int M, vector<int> A) { vector<vector<int>> v(M); A.push_back(0); for (int i=0; i<A.size()-1; i++) v[A[i]].push_back(A[i+1]); vector<int> C(M+1, 0); C[0] = A[0]; vector<int> X, Y; for (int i=0; i<M; i++){ if (v[i].size() == 1) C[i+1] = v[i][0]; else { X.push_back(v[i][0]); Y.push_back(v[i][1]); C[i+1] = -X.size(); } } answer(C, X, Y); }

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:8:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |   for (int i=0; i<A.size()-1; i++) v[A[i]].push_back(A[i+1]);
      |                 ~^~~~~~~~~~~