Compilare: main.cpp: In function 'int main()': main.cpp:67:10: warning: unused variable 'x' [-Wunused-variable] int t, x, y; ^ main.cpp:67:13: warning: unused variable 'y' [-Wunused-variable] int t, x, y; ^ main.cpp:65:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cabana.in", "r", stdin); ^ main.cpp:66:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cabana.out", "w", stdout); ^ main.cpp:68:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ main.cpp:79:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%d", &n, &k); ^