Compilare: main.cpp: In function 'int main()': main.cpp:7:36: warning: integer overflow in expression [-Woverflow] int n,i,sol,x,ok=-1,ans=(1<<31)-1; ~~~~~~~^~ main.cpp:23:21: warning: integer overflow in expression [-Woverflow] if(ans==((1<<31)-1)) ~~~~~~~^~ main.cpp:5:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("logik.in", "r", stdin); ^ main.cpp:6:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("logik.out", "w", stdout); ^ main.cpp:8:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:11:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^