Compilare: user.cpp: In function ‘int main()’: user.cpp:69:27: warning: variable ‘st’ set but not used [-Wunused-but-set-variable] int i, xx, yy, u = 0, st, dr, pos, ka, kb, a, b, j; ^ user.cpp:69:35: warning: unused variable ‘pos’ [-Wunused-variable] int i, xx, yy, u = 0, st, dr, pos, ka, kb, a, b, j; ^ user.cpp:71:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("reborn.in", "r", stdin); ^ user.cpp:72:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("reborn.out", "w", stdout); ^ user.cpp:74:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d", &n, &m, &q); ^ user.cpp:76:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &xx, &yy); ^ user.cpp:106:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &xx, &yy); ^