paint.cpp: In function 'std::__cxx11::string solve_puzzle(std::__cxx11::string, std::vector<int>)':
paint.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<s.size();i++)visi[i]=-1;
~^~~~~~~~~
paint.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<c.size();i++){
~^~~~~~~~~
paint.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(i+1<c.size())hay+='_';
~~~^~~~~~~~~
paint.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<s.size();i++){
~^~~~~~~~~
paint.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<nw.size();j++){
~^~~~~~~~~~
paint.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<s.size();i++){
~^~~~~~~~~