Compilare: user.cpp: In function ‘void solve1()’: user.cpp:25:9: warning: unused variable ‘ans’ [-Wunused-variable] int ans=0; ^ user.cpp: In function ‘void solve2()’: user.cpp:35:15: warning: unused variable ‘X’ [-Wunused-variable] int x, y, X, Y; ^ user.cpp:35:18: warning: unused variable ‘Y’ [-Wunused-variable] int x, y, X, Y; ^ user.cpp: In function ‘int main()’: user.cpp:66:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pseudobil.in", "r", stdin); ^ user.cpp:67:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pseudobil.out", "w", stdout); ^