Compilare: user.cpp: In function ‘void Prim()’: user.cpp:68:13: warning: unused variable ‘cost’ [-Wunused-variable] int cost = Q.top().first; ^ user.cpp:59:9: warning: unused variable ‘coridoare’ [-Wunused-variable] int coridoare = 0; ^ user.cpp: In function ‘void Read()’: user.cpp:114:39: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[5]’ [-Wformat=] scanf("%d %d %s\n", &x, &y, &s); ^ user.cpp:108:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &test); ^ user.cpp:109:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &N, &M); ^ user.cpp:114:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %s\n", &x, &y, &s); ^ user.cpp: In function ‘int main()’: user.cpp:148:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.in", "r", stdin); ^ user.cpp:149:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.out", "w", stdout); ^