foo.cc: In function 'int main()':
foo.cc:45:38: warning: too many arguments for format [-Wformat-extra-args]
   else printf("No solution.\n",minDis);
                                      ^
foo.cc:22:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%d%d",&s,&e,&d);
    ~~~~~^~~~~~~~~~~~~~~~~~~

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