football.cpp: In function 'int main()':
football.cpp:5:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
5 | int tc;scanf("%d",&tc);
| ~~~~~^~~~~~~~~~
football.cpp:7:16: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
7 | int n,k;scanf("%d%d",&n,&k);
| ~~~~~^~~~~~~~~~~~~~
football.cpp:10:15: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
10 | int a;scanf("%d",&a);
| ~~~~~^~~~~~~~~