foo.cc: In function 'int main()':
foo.cc:8:15: warning: unused variable 't' [-Wunused-variable]
     int i,j,n,t;
               ^
foo.cc:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
foo.cc:13:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
          scanf("%d",&q[i][j].ini);
          ~~~~~^~~~~~~~~~~~~~~~~~~

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