Compilare: user.cpp: In function ‘int main()’: user.cpp:74:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 2; j < w[i].size(); j ++) { ^ user.cpp:82:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 2; j < w[i].size(); j ++) { ^ user.cpp:90:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 2; j < w[i].size(); j ++) { ^ user.cpp:98:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 2; j < w[i].size(); j ++) { ^ user.cpp: In function ‘void bkt(int)’: user.cpp:116:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == e.size()) { ^ user.cpp: In function ‘void exclusiv(int, int)’: user.cpp:127:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == now.size()) { ^ user.cpp:133:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < L[e[now[i]]].size(); j ++) { ^ user.cpp: In function ‘void calc()’: user.cpp:143:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < e.size(); i ++) { ^ user.cpp:147:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < L[e[i]].size(); j ++) { ^ user.cpp: In function ‘void dfs(int)’: user.cpp:175:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[v].size(); i ++) { ^