/in/foo.cc: In function 'void tarjan(int)':
/in/foo.cc:30:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<out[s].size();j++)
~^~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:78:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<in[i].size();j++)
~^~~~~~~~~~~~~
/in/foo.cc:83:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<out[i].size();j++)
~^~~~~~~~~~~~~~
/in/foo.cc:90:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<check.size();j++)
~^~~~~~~~~~~~~