Compilare: main.cpp: In function 'void solve()': main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= c.size() + 1; i++) ~~^~~~~~~~~~~~~~~ main.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < a.size()) ~~^~~~~~~~~~ main.cpp:27:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < b.size()) ~~^~~~~~~~~~ main.cpp:35:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < c.size()) ~~^~~~~~~~~~ main.cpp:38:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] v[i] -= (i == c.size() - 1); ~~^~~~~~~~~~~~~~~ main.cpp:53:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < a.size() && a[a.size() - i - 1] == '*') ~~^~~~~~~~~~ main.cpp:55:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == a.size() - 1) ~~^~~~~~~~~~~~~~~ main.cpp:61:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < b.size() && b[b.size() - i - 1] == '*') ~~^~~~~~~~~~ main.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == b.size() - 1) ~~^~~~~~~~~~~~~~~ main.cpp:69:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < c.size() && c[c.size() - i - 1] == '*') ~~^~~~~~~~~~ main.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == c.size() - 1) ~~^~~~~~~~~~~~~~~