Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:9: error: ‘e’ was not declared in this scope e=1LL*c[i]*c[j]; ^ user.cpp:5:99: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitagora2.in","r",stdin),freopen("pitagora2.out","w",stdout),scanf("%d",&n),r=n*n,b=n; ^ user.cpp:5:99: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:99: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]