Compilare: main.cpp: In function 'int main()': main.cpp:5:96: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("distincte2.in","r",stdin),freopen("distincte2.out","w",stdout),scanf("%d%d",&n,&m); ^ main.cpp:5:96: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:5:96: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:7:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x),a[x]=1; ^ main.cpp:11:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&i),printf("%d\n",b[i]-b[x-1]); ^