Compilare: user.cpp: In function ‘int main()’: user.cpp:34:45: warning: narrowing conversion of ‘((((long long int)b) * ((long long int)(x + y))) / ((long long int)(x * 2)))’ from ‘long long int’ to ‘int’ inside { } [-Wnarrowing] sol.push_back({(long long)b * (x + y) / (2 * x), (long long)b * (x + y) / (2 * y)}); ^ user.cpp:34:79: warning: narrowing conversion of ‘((((long long int)b) * ((long long int)(x + y))) / ((long long int)(y * 2)))’ from ‘long long int’ to ‘int’ inside { } [-Wnarrowing] sol.push_back({(long long)b * (x + y) / (2 * x), (long long)b * (x + y) / (2 * y)}); ^ user.cpp:18:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("armonica.in", "r", stdin); ^ user.cpp:19:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("armonica.out", "w", stdout); ^ user.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &b); ^