Compilare: main.cpp: In function 'void rebalancedeque()': main.cpp:51:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sz + 1 < st[2].size()) ~~~~~~~^~~~~~~~~~~~~~ main.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sz + 1 < st[3].size()) ~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void rebalanceall()': main.cpp:83:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(st[1].size() < dequesize()){ ~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:88:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dequesize() < st[1].size()) ~~~~~~~~~~~~^~~~~~~~~~~~~~