foo.cc: In function 'int main()':
foo.cc:5:13: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'double*' [-Wformat=]
    5 |     scanf("%d %lf %lf",&a,&m,&k);
      |            ~^          ~~
      |             |          |
      |             int*       double*
      |            %le

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