./Main.cpp: In function ‘int main()’:
./Main.cpp:5:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
int i,j,k,l,n,m;scanf("%d%d",&n,&m);
^
./Main.cpp:6:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
for(i=0;i<n;i++)scanf("%s",a[i]);
^
./Main.cpp:7:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
for(i=0;i<m;i++)scanf("%s",b[i]);
^