Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:21:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V[in].size(); i ++) { ^ user.cpp: In function ‘int ciclu(int)’: user.cpp:56:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; ret == 105 && i < V[in].size(); i ++) { ^ user.cpp:55:10: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = false; ^ user.cpp: In function ‘void both()’: user.cpp:78:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; ok && j < cic.size() - 1; j ++) { ^ user.cpp: In function ‘void single()’: user.cpp:111:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < TO.size(); i ++) { ^ user.cpp:112:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < FROM.size(); j ++) { ^ user.cpp:115:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; ok && k < cic.size() - 1; k ++) { ^ user.cpp: In function ‘void smth()’: user.cpp:149:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < V[i].size(); j ++) { ^ user.cpp:155:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < V[i].size(); j ++) { ^ user.cpp: In function ‘int main()’: user.cpp:180:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ctc.size(); i ++) ^ user.cpp:181:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ctc[i].size() > R) ^ user.cpp:183:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ctc[poz].size(); i ++) ^ user.cpp:192:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(cic.size() != R) { ^ user.cpp:195:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < cic.size(); i ++) ^ user.cpp:183:31: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i = 0; i < ctc[poz].size(); i ++)