Compilare: main.cpp: In function 'void solve()': main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p < s[i].size() && p >= 0){ ~~^~~~~~~~~~~~~ main.cpp:40:40: warning: array subscript has type 'char' [-Wchar-subscripts] pos[i].push(dp[i][c][p]+1); ^ main.cpp:42:31: warning: array subscript has type 'char' [-Wchar-subscripts] if(dp[i][c][p] >= 0) ^