/in/foo.cc: In function 'int main()':
/in/foo.cc:46:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v1.size();i++){
~^~~~~~~~~~
/in/foo.cc:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v1.size();i++){
~^~~~~~~~~~
/in/foo.cc:64:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v2.size();i++){
~^~~~~~~~~~
/in/foo.cc:67:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v1.size();i++){
~^~~~~~~~~~
/in/foo.cc:75:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<v1.size();i++){
~^~~~~~~~~~