Compilare: user.cpp: In function ‘void solve()’: user.cpp:214:34: warning: unused variable ‘len’ [-Wunused-variable] int i, ok = 0, pozSt, pozDr, len, p2, diff; ^ user.cpp:214:39: warning: unused variable ‘p2’ [-Wunused-variable] int i, ok = 0, pozSt, pozDr, len, p2, diff; ^ user.cpp:214:43: warning: unused variable ‘diff’ [-Wunused-variable] int i, ok = 0, pozSt, pozDr, len, p2, diff; ^ user.cpp: In function ‘void readFile()’: user.cpp:27:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &k); ^ user.cpp:29:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:34:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &x, &y); ^ user.cpp:43:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &m); ^ user.cpp:47:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &x, &y); ^