#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N,X,Y; int A[202020]; ll L[202020][3]; ll R[202020][3]; void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>X>>Y; L[0][1]=L[0][2]=-1LL<<60; FOR(i,N) { cin>>A[i]; L[i+1][0]=L[i][0]+A[i]; L[i+1][1]=max(L[i][0]+X,L[i][1]+X); L[i+1][2]=max(L[i][1]+A[i],L[i][2]+A[i]); } R[N+1][1]=R[N+1][2]=-1LL<<60; for(i=N-1;i>=0;i--) { R[i+1][0]=R[i+2][0]+A[i]; R[i+1][1]=max(R[i+2][0]+Y,R[i+2][1]+Y); R[i+1][2]=max(R[i+2][1]+A[i],R[i+2][2]+A[i]); } for(i=1;i