foo.cc: In function 'int main()':
foo.cc:12:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   for(int i=0;i<=s1.size();i++)
      |               ~^~~~~~~~~~~
foo.cc:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   for(int i=0;i<=s2.size();i++)
      |               ~^~~~~~~~~~~
foo.cc:18:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   for(int i=0;i<=s3.size();i++)
      |               ~^~~~~~~~~~~
foo.cc:21:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |   for(int i=0;i<=s4.size();i++)
      |               ~^~~~~~~~~~~

正在同步测试数据，请稍后
Found 5 testcases.
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