#include <cstdio> #include <algorithm> #include <cstring> #include <vector> #define LL long long using namespace std; const int MAXN=2e5+5; int col[MAXN],dp[2][MAXN],a[MAXN]; LL ans=0; int N; int main() { scanf("%d",&N); for(int i=1;i<=N;i++) return 0; }