Compilare: main.cpp: In function 'int main()': main.cpp:22:10: warning: unused variable 'm' [-Wunused-variable] int n, m, i, j, best; ^ main.cpp:24:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("cablaj.in", "r", stdin); ^ main.cpp:25:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("cablaj.out", "w", stdout); ^ main.cpp:44:16: warning: 'best' may be used uninitialized in this function [-Wmaybe-uninitialized] dist[best] = -1; ~~~~~~~~~~~^~~~