wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:14:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<r.size();i++){
~^~~~~~~~~
wiring.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<b.size();i++){
~^~~~~~~~~
wiring.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v.size();i++){
~^~~~~~~~~
wiring.cpp:37:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<stk[i].size();j++){
~^~~~~~~~~~~~~~
wiring.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(al[i^1].size()!=id){
~~~~~~~~~~~~~~^~~~