Compilare: user.cpp: In function ‘void afisare()’: user.cpp:70:40: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘std::vector<nod>::size_type {aka long unsigned int}’ [-Wformat=] printf("%d\n%d\n", cost, sol.size()); ^ user.cpp: In function ‘void citire()’: user.cpp:19:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.cpp:22:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n", &nou.x, &nou.y, &nou.c); ^ user.cpp: In function ‘int main()’: user.cpp:77:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in", "r", stdin); ^ user.cpp:78:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out", "w", stdout); ^