Compilare: main.cpp: In function 'int main()': main.cpp:15:142: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=] freopen("inversmodular.in","r",stdin),freopen("inversmodular.out","w",stdout),scanf("%d%d",&a,&n),E(x,y,a,n),printf("%lld",x<=0?(n+x%n):x); ^ main.cpp:15:143: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("inversmodular.in","r",stdin),freopen("inversmodular.out","w",stdout),scanf("%d%d",&a,&n),E(x,y,a,n),printf("%lld",x<=0?(n+x%n):x); ^ main.cpp:15:143: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:15:143: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]