Compilare: main.cpp: In function 'int main()': main.cpp:32:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("retea2.in","r",stdin); ^ main.cpp:33:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("retea2.out","w",stdout); ^ main.cpp:63:55: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized] best[i] = min(best[i], dist(oras[index], oras[i])); ^