Compilare: main.cpp: In function 'int main()': main.cpp:53:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) ~^~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:59:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] {fin>>a+1; ~^~ main.cpp:60:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] fin>>b+1; ~^~