Compilare: user.cpp: In function ‘int main()’: user.cpp:60:4: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=1;i<n;i++) ^~~ user.cpp:62:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ printf("%lld",t); ^~~~~~ user.cpp:31:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ghicit.in","r",stdin); ^ user.cpp:32:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ghicit.out","w",stdout); ^