Compilare: user.cpp: In function ‘int main()’: user.cpp:22:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=s.length();i++) for(int k=0;k<=N;k++) D[k][i]=INF; ^ user.cpp:24:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=s.length();i++){ ^ user.cpp:4:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define min(a,b) ((a)<(b)?(a):(b)) ^ user.cpp:26:24: note: in expansion of macro ‘min’ for(int j=i;j<=min(i+19,s.length());j++){ ^ user.cpp:4:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define min(a,b) ((a)<(b)?(a):(b)) ^ user.cpp:26:24: note: in expansion of macro ‘min’ for(int j=i;j<=min(i+19,s.length());j++){ ^