ho_t1.cpp: In function 'int main()':
ho_t1.cpp:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&n);
~~~~~^~~~~~~~~
ho_t1.cpp:9:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=0;i<n+1;i++){scanf("%d",&arr[i].first);arr[i].second=i;}
~~~~~^~~~~~~~~~~~~~~~~~~~
ho_t1.cpp:10:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=0;i<n;i++){scanf("%d",&brr[i].first);brr[i].second=i;}
~~~~~^~~~~~~~~~~~~~~~~~~~