Compilare: user.cpp: In function ‘int seek()’: user.cpp:31:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, s(1), f(1), best(15001), nr(0); ^ user.cpp:31:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, s(1), f(1), best(15001), nr(0); ^ user.cpp: In function ‘void read()’: user.cpp:20:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "panouri.in", "r", stdin ); ^ user.cpp:21:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d%d", &n, &t ); ^ user.cpp:23:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d", &q ), r[i] = q; ^ user.cpp:25:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d", &q ), v[q].x = 1; ^ user.cpp: In function ‘void write()’: user.cpp:60:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "panouri.out", "w", stdout ); ^