Compilare: main.cpp: In lambda function: main.cpp:23:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int mid = l + r >> 1; ~~^~~ main.cpp: In function 'int main()': main.cpp:54:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cubeon.in", "r", stdin); ^ main.cpp:55:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cubeon.out", "w", stdout); ^