qvect.cpp: In function 'int main()': qvect.cpp:60: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result qvect.cpp:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result qvect.cpp:63: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result qvect.cpp:66: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result qvect.cpp:70: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result qvect.cpp:75: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result qvect.cpp: In function 'int q2(int, int, int)': qvect.cpp:26: warning: 'rez' may be used uninitialized in this function qvect.cpp:26: warning: 'sol' may be used uninitialized in this function