Compilare: user.cpp: In function ‘long long int solve1()’: user.cpp:73:36: warning: integer overflow in expression [-Woverflow] long long ansg = (1ll << 63) - 1, ans; ^ user.cpp: In function ‘int main()’: user.cpp:127:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:128:20: warning: unused variable ‘ans1’ [-Wunused-variable] long long ans, ans1, ans2; ^ user.cpp:128:26: warning: unused variable ‘ans2’ [-Wunused-variable] long long ans, ans1, ans2; ^ user.cpp:130:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("infinitepatternmatching.in", "r", stdin); ^ user.cpp:131:57: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("infinitepatternmatching.out", "w", stdout); ^ user.cpp:133:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", b); ^