Compilare: user.cpp: In function ‘int main()’: user.cpp:38:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<r.size()-1;++i) ^ user.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==r.size()-2) ^ user.cpp:17:15: warning: unused variable ‘start’ [-Wunused-variable] int dp[N],start=-1,finish=-1,cmax=-inf; ^ user.cpp:17:24: warning: unused variable ‘finish’ [-Wunused-variable] int dp[N],start=-1,finish=-1,cmax=-inf; ^