arbore1.cpp: In function 'long long int dinamic_programming(int, int)': arbore1.cpp:39: warning: comparison between signed and unsigned integer expressions arbore1.cpp:45: warning: comparison between signed and unsigned integer expressions arbore1.cpp: In function 'int main()': arbore1.cpp:51: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result arbore1.cpp:52: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result arbore1.cpp:54: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result arbore1.cpp:56: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result