Compilare: user.cpp: In function ‘int main()’: user.cpp:30:86: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cutii.in","r",stdin),freopen("cutii.out","w",stdout),scanf("%d%d",&n,&t); ^ user.cpp:30:86: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:30:86: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:33:72: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&e[i],&a[i],&b[i]),c[e[i]]=a[i],d[e[i]]=b[i]; ^