Compilare: main.cpp: In function 'int main()': main.cpp:109:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < ans.size() - 1 ; i++){ ~~^~~~~~~~~~~~~~~~ main.cpp:121:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < finalans.size() ; i++) ~~^~~~~~~~~~~~~~~~~ main.cpp:129:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < finalans.size() ; i++){ ~~^~~~~~~~~~~~~~~~~ main.cpp:131:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = i + 1 ; j < finalans.size() ; j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:71:38: warning: 'falsey' may be used uninitialized in this function [-Wmaybe-uninitialized] v[falsex].push_back(make_pair(falsey, n)); ~~~~~~~~~^~~~~~~~~~~ main.cpp:25:29: warning: 'falsex' may be used uninitialized in this function [-Wmaybe-uninitialized] int i,x,y,root,var = 0, falsex, falsey, elem, next, node, j; ^~~~~~ main.cpp:25:15: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] int i,x,y,root,var = 0, falsex, falsey, elem, next, node, j; ^~~~