/in/foo.cc: In function 'int main()':
/in/foo.cc:33:15: warning: format '%u' expects argument of type 'unsigned int*', but argument 2 has type 'size_t* {aka long unsigned int*}' [-Wformat=]
  scanf("%u",&n);
               ^
/in/foo.cc:34:15: warning: format '%u' expects argument of type 'unsigned int*', but argument 2 has type 'size_t* {aka long unsigned int*}' [-Wformat=]
  scanf("%u",&m);
               ^
/in/foo.cc:36:22: warning: format '%u' expects argument of type 'unsigned int*', but argument 2 has type 'size_t* {aka long unsigned int*}' [-Wformat=]
   scanf("%u %u",&u,&v);
                      ^
/in/foo.cc:36:22: warning: format '%u' expects argument of type 'unsigned int*', but argument 3 has type 'size_t* {aka long unsigned int*}' [-Wformat=]