Compilare: main.cpp: In function 'void readInput()': main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<s.size(); i++){ ~^~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:47:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++){ ~^~~~~~~~~ main.cpp:53:28: warning: array subscript has type 'char' [-Wchar-subscripts] dp[i][i][v[i].first] = v[i].second; ^ main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int len=1; len<v.size(); len++){ ~~~^~~~~~~~~ main.cpp:57:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size()-len; i++){ ~^~~~~~~~~~~~~ main.cpp:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++){ ~^~~~~~~~~