Compilare: main.cpp: In member function 'bool aint::operator+=(const aint&)': main.cpp:27:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:65:90: warning: narrowing conversion of '((((((1ll * ((long long int)ans.aint::d)) + ((long long int)xy)) + ((long long int)ans.aint::xy)) - ((1ll * ((long long int)ans.aint::y)) * ((long long int)v[i].Point::x))) - ((1ll * ((long long int)ans.aint::x)) * ((long long int)v[i].Point::y))) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] (1LL * ans.d + xy + ans.xy - 1LL * ans.y * v[i].x - 1LL * ans.x * v[i].y) % MOD, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:66:39: warning: narrowing conversion of '(((1ll * ((long long int)ans.aint::cnt)) * ((long long int)v[i].Point::x)) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] 1LL * ans.cnt * v[i].x % MOD, ~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:67:39: warning: narrowing conversion of '(((1ll * ((long long int)ans.aint::cnt)) * ((long long int)v[i].Point::y)) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] 1LL * ans.cnt * v[i].y % MOD, ~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:51:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &n); ^ main.cpp:53:57: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &v[i].x, &v[i].y), M[v[i].y]++; ^