foo.cc: In function 'int main()':
foo.cc:7:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare]
    7 |         for(long long j=1;j<=k;j++){
      |                           ~^~~
foo.cc:8:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare]
    8 |                 for(long long w=1;w<=k;w++){
      |                                   ~^~~
foo.cc:10:45: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare]
   10 |                                 if((w*w+j*j)>ans){
      |                                    ~~~~~~~~~^~~~
foo.cc:5:28: warning: unused variable 'm' [-Wunused-variable]
    5 |         unsigned long long m,n,k,ans=0;
      |                            ^
foo.cc:5:30: warning: unused variable 'n' [-Wunused-variable]
    5 |         unsigned long long m,n,k,ans=0;
      |                              ^

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