Compilare: main.cpp: In function 'int main()': main.cpp:38:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("alpin.in", "r", stdin); ^ main.cpp:39:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("alpin.out", "w", stdout); ^ main.cpp:66:21: warning: 'jj' may be used uninitialized in this function [-Wmaybe-uninitialized] go (ii, jj, ans); ^ main.cpp:66:21: warning: 'ii' may be used uninitialized in this function [-Wmaybe-uninitialized]