Compilare: main.cpp: In function 'int main()': main.cpp:11:18: warning: unused variable 'pmax' [-Wunused-variable] int n, i, j, pmax; ^~~~ main.cpp:9:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hacker3.in", "r", stdin); ^ main.cpp:10:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hacker3.out", "w", stdout); ^ main.cpp:13:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:18:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld" , &a , &b); ^ main.cpp:41:17: warning: iteration 35 invokes undefined behavior [-Waggressive-loop-optimizations] if(d2b[j] == 0) ~~~~~^ main.cpp:37:19: note: within this loop for(j = 0 ; j <= base ; j ++) ~~^~~~~~~ main.cpp:32:27: warning: iteration 35 invokes undefined behavior [-Waggressive-loop-optimizations] d1a[j] = d2a[j]; ~~~~~^ main.cpp:30:23: note: within this loop for(j = 0 ; j <= base ; j ++) ~~^~~~~~~ main.cpp:15:16: warning: iteration 35 invokes undefined behavior [-Waggressive-loop-optimizations] lg2[i] = (1 << i); ~~~~~~~^~~~~~~~~~ main.cpp:14:19: note: within this loop for(i = 0 ; i <= base ; i ++) ~~^~~~~~~