#include <bits/stdc++.h> using namespace std; #define rep(i,a,n) for (int i=a;i<n;i++) #define per(i,a,n) for (int i=n-1;i>=a;i--) #define pb push_back #define eb emplace_back #define mp make_pair #define all(x) (x).begin(),(x).end() #define fi first #define se second #define SZ(x) ((int)(x).size()) typedef vector<int> VI; typedef basic_string<int> BI; typedef long long ll; typedef pair<int,int> PII; typedef double db; mt19937 mrand(1); const ll mod=1000000007; int rnd(int x) { return mrand() % x;} ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;} //ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;} // head const int N=201000,M=5100000; array<int,3> seg[N]; int fl[N],fr[N],nn,n; int sufl[N],sufr[N],pl[N],pr[N]; vector<PII> que[N]; ll ans[N],tmpr[M],tmpr2[M]; bool inter(int x,int y) { return seg[x][1]>=seg[y][0]&&seg[y][1]>=seg[x][0]; } template<class T> struct BIT { T c[N]; int size; void init(int s) { size = s; for (int i = 1; i <= s; i++) c[i] = 0; } T query(int x) { // 1 ... x assert(x <= size); T s = 0; for (; x; x -= x & (-x)) { s += c[x]; } return s; } void modify(int x, T s) { // a[x] += s assert(x != 0); for (; x <= size; x += x & (-x)) { c[x] += s; } } }; BIT<int> c; void solve2(int n) { rep(i,1,n+1) { pr[seg[i][0]]=seg[i][1]; pl[seg[i][1]]=seg[i][0]; } sufr[n+1]=n+1; sufl[n+1]=n+1; per(i,1,n+1) { sufr[i]=min(sufr[i+1],pr[i]); sufl[i]=min(sufl[i+1],pl[i]); } map<PII,int> tmp; int id=0; rep(i,1,n+1) que[i].clear(); rep(i,1,n+1) { int pL=seg[i][0],qL=seg[i][1]; while (1) { if (!tmp.count(mp(pL,qL))) { tmp[mp(pL,qL)]=++id; //printf("?? %d %d %d\n",pL,qL,id); que[pL].pb(mp(qL,id)); } else break; int cpL=sufl[qL]; int cqL=sufr[pL]; pL=cpL; qL=cqL; } } assert(id<=5000000); c.init(n); rep(i,1,n+1) { for (auto [r,id]:que[i]) tmpr[id]=c.query(r-1); c.modify(pr[i],1); } fprintf(stderr,"%d\n",id); rep(i,1,id+1) tmpr2[i]=-1; rep(i,1,n+1) { int pL=seg[i][0],qL=seg[i][1]; function<ll(int,int)> gao=[&](int pL,int qL) { int id=tmp[mp(pL,qL)]; if (tmpr2[id]!=-1) return tmpr2[id]; else { tmpr2[id]=tmpr[id]; if (pL==1&&qL==1) return tmpr2[id]; return tmpr2[id]+=gao(sufl[qL],sufr[pL]); } }; ans[seg[i][2]]+=gao(pL,qL); } } void solve(int L,int R) { n=R-L+1; rep(i,1,n+1) { seg[i]={fl[L+i-1]-L+1,fr[L+i-1]-L+1,L+i-1}; ans[L+i-1]+=n-1; } solve2(n); rep(i,1,n+1) { seg[i][0]=n+1-seg[i][0]; seg[i][1]=n+1-seg[i][1]; } solve2(n); } int main() { scanf("%d",&nn); int pre=0,mx=0; for (int i=1;i<=nn;i++) { fl[i]=i; scanf("%d",&fr[i]); mx=max(mx,fr[i]); if (mx==i) { solve(pre+1,i); pre=i; } } rep(i,1,nn+1) printf("%lld%c",ans[i]," \n"[i==nn]); }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | #include <bits/stdc++.h> using namespace std; #define rep(i,a,n) for (int i=a;i<n;i++) #define per(i,a,n) for (int i=n-1;i>=a;i--) #define pb push_back #define eb emplace_back #define mp make_pair #define all(x) (x).begin(),(x).end() #define fi first #define se second #define SZ(x) ((int)(x).size()) typedef vector<int> VI; typedef basic_string<int> BI; typedef long long ll; typedef pair<int,int> PII; typedef double db; mt19937 mrand(1); const ll mod=1000000007; int rnd(int x) { return mrand() % x;} ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;} //ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;} // head const int N=201000,M=5100000; array<int,3> seg[N]; int fl[N],fr[N],nn,n; int sufl[N],sufr[N],pl[N],pr[N]; vector<PII> que[N]; ll ans[N],tmpr[M],tmpr2[M]; bool inter(int x,int y) { return seg[x][1]>=seg[y][0]&&seg[y][1]>=seg[x][0]; } template<class T> struct BIT { T c[N]; int size; void init(int s) { size = s; for (int i = 1; i <= s; i++) c[i] = 0; } T query(int x) { // 1 ... x assert(x <= size); T s = 0; for (; x; x -= x & (-x)) { s += c[x]; } return s; } void modify(int x, T s) { // a[x] += s assert(x != 0); for (; x <= size; x += x & (-x)) { c[x] += s; } } }; BIT<int> c; void solve2(int n) { rep(i,1,n+1) { pr[seg[i][0]]=seg[i][1]; pl[seg[i][1]]=seg[i][0]; } sufr[n+1]=n+1; sufl[n+1]=n+1; per(i,1,n+1) { sufr[i]=min(sufr[i+1],pr[i]); sufl[i]=min(sufl[i+1],pl[i]); } map<PII,int> tmp; int id=0; rep(i,1,n+1) que[i].clear(); rep(i,1,n+1) { int pL=seg[i][0],qL=seg[i][1]; while (1) { if (!tmp.count(mp(pL,qL))) { tmp[mp(pL,qL)]=++id; //printf("?? %d %d %d\n",pL,qL,id); que[pL].pb(mp(qL,id)); } else break; int cpL=sufl[qL]; int cqL=sufr[pL]; pL=cpL; qL=cqL; } } assert(id<=5000000); c.init(n); rep(i,1,n+1) { for (auto [r,id]:que[i]) tmpr[id]=c.query(r-1); c.modify(pr[i],1); } fprintf(stderr,"%d\n",id); rep(i,1,id+1) tmpr2[i]=-1; rep(i,1,n+1) { int pL=seg[i][0],qL=seg[i][1]; function<ll(int,int)> gao=[&](int pL,int qL) { int id=tmp[mp(pL,qL)]; if (tmpr2[id]!=-1) return tmpr2[id]; else { tmpr2[id]=tmpr[id]; if (pL==1&&qL==1) return tmpr2[id]; return tmpr2[id]+=gao(sufl[qL],sufr[pL]); } }; ans[seg[i][2]]+=gao(pL,qL); } } void solve(int L,int R) { n=R-L+1; rep(i,1,n+1) { seg[i]={fl[L+i-1]-L+1,fr[L+i-1]-L+1,L+i-1}; ans[L+i-1]+=n-1; } solve2(n); rep(i,1,n+1) { seg[i][0]=n+1-seg[i][0]; seg[i][1]=n+1-seg[i][1]; } solve2(n); } int main() { scanf("%d",&nn); int pre=0,mx=0; for (int i=1;i<=nn;i++) { fl[i]=i; scanf("%d",&fr[i]); mx=max(mx,fr[i]); if (mx==i) { solve(pre+1,i); pre=i; } } rep(i,1,nn+1) printf("%lld%c",ans[i]," \n"[i==nn]); } |