Compilare: user.cpp: In function ‘int bs(int, int, int, int, int)’: user.cpp:101:9: warning: unused variable ‘st’ [-Wunused-variable] int st=1, dr=n, m, i, s, t, nr=0; ^ user.cpp:101:15: warning: unused variable ‘dr’ [-Wunused-variable] int st=1, dr=n, m, i, s, t, nr=0; ^ user.cpp:101:21: warning: unused variable ‘m’ [-Wunused-variable] int st=1, dr=n, m, i, s, t, nr=0; ^ user.cpp: In function ‘int main()’: user.cpp:115:18: warning: unused variable ‘j’ [-Wunused-variable] int n, t, i, j, p, r, x, y, nr; ^ user.cpp: In function ‘int ReadInt()’: user.cpp:30:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer,1,BSIZE,stdin); ^ user.cpp:40:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer,1,BSIZE,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:116:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qxy.in","r",stdin); ^ user.cpp:117:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("qxy.out","w",stdout); ^ user.cpp:118:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer,1,BSIZE,stdin); ^