Compilare: main.cpp: In function 'int main()': main.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.length(); i++) { ~~^~~~~~~~~~~~ main.cpp:33:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+2 < s.length()) dp[i+2][0] = max(dp[i][0], dp[i+2][0]); ~~~~^~~~~~~~~~~~ main.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+3 < s.length()) dp[i+3][1] = max(dp[i][1], dp[i+3][1]); ~~~~^~~~~~~~~~~~ main.cpp:38:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+2 < s.length()) dp[i+2][0] = max(dp[i+2][0], dp[i][0]+1); ~~~~^~~~~~~~~~~~ main.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+3 < s.length()) dp[i+3][1] = max(dp[i+3][1], dp[i][0]+1); ~~~~^~~~~~~~~~~~ main.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+2 < s.length()) dp[i+2][0] = max(dp[i+2][0], dp[i][1]+1); ~~~~^~~~~~~~~~~~ main.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+3 < s.length()) dp[i+3][1] = max(dp[i+3][1], dp[i][1]+1); ~~~~^~~~~~~~~~~~