foo.cc: In function 'void init()':
foo.cc:8:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int j=0;j<keyboard[i].length();++j)
      |                  ~^~~~~~~~~~~~~~~~~~~~~
foo.cc:9:28: warning: array subscript has type 'char' [-Wchar-subscripts]
    9 |       clicks[keyboard[i][j]]=j+1;
      |                            ^
foo.cc: In function 'int main()':
foo.cc:17:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int i=0;i<s.length();++i)
      |               ~^~~~~~~~~~~
foo.cc:18:23: warning: array subscript has type 'char' [-Wchar-subscripts]
   18 |     count+=clicks[s[i]];
      |                       ^

正在同步测试数据，请稍后
Found 5 testcases.
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