Borderou de evaluare (job #842908)

Compilare: main.cpp: In function 'void backtrack(std::vector<int>&, int&, std::vector<int>&, std::vector<char>&)': main.cpp:12:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 12 | if(perm.size() == N) { | ~~~~~~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:40:11: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 40 | fscanf(in, "%d %d", &N, &K); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:42:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 42 | for(int i = 0; i < K; i++) fscanf(in, "%d", &A[i]); | ~~~~~~^~~~~~~~~~~~~~~~~