#include #include #include #include #include #include #include #include #include #include #include #include #define inf 0x3f3f3f3f #define Inf 0x3FFFFFFFFFFFFFFFLL #define eps 1e-6 #define pi acos(-1.0) using namespace std; typedef long long ll; const int maxn = 100000 + 10; struct Node { int pos,l,r,gval; Node(int pos = 0,int l = 0,int r = 0,int gval = 0):pos(pos),l(l),r(r),gval(gval){} bool operator < (const Node & a) const { if(gval != a.gval) return gval < a.gval; if(pos != a.pos) return pos < a.pos; return r < a.r; } }node[maxn*20]; ll sum[maxn*20]; int cnt[maxn*20]; int a[maxn],pa[maxn],pre[maxn],val[maxn],n,tot; int gcd(int a,int b) { return b == 0?a:gcd(b,a%b);} vectorvt[maxn]; void precal() { for(int i = 0;i <= n;++i) vt[i].clear(); vt[n].push_back(Node(n,n,n,a[n])); Node ntmp; int x; for(int i = n - 1;i >= 1;--i) { int size = vt[i + 1].size(); int cnt = 1; vt[i].push_back(Node(i,i,i,a[i])); for(int j = 0;j < size;++j) { ntmp = vt[i+1][j]; x = gcd(a[i],ntmp.gval); if(cnt && vt[i][cnt-1].gval == x) vt[i][cnt - 1].r = ntmp.r; else vt[i].push_back(Node(i,ntmp.l,ntmp.r,x)),cnt++; } } tot = 0; for(int i = 1;i <= n;++i) for(int j = 0;j < (int)vt[i].size();++j) node[++tot] = Node(vt[i][j]); sort(node + 1,node + tot + 1); sum[0] = 0; for(int i = 1;i <= tot;++i) sum[i] = sum[i-1] + node[i].r - node[i].l + 1; cnt[1] = 1; for(int i = 2;i <= tot;++i) cnt[i] = cnt[i-1] + (node[i].gval != node[i-1].gval); } int f(int l,int r) { int L = 0,R = vt[l].size() - 1; while(L < R) { int m = (L + R)>>1; // cout<