subsecvmax.cpp: In function 'int main()': subsecvmax.cpp:12: warning: format '%lu' expects type 'long unsigned int*', but argument 2 has type 'long long int*' subsecvmax.cpp:14: warning: format '%lu' expects type 'long unsigned int*', but argument 2 has type 'long long int*' subsecvmax.cpp:5: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result subsecvmax.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result subsecvmax.cpp:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result subsecvmax.cpp:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result subsecvmax.cpp:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result subsecvmax.cpp:7: warning: 'ci' may be used uninitialized in this function