제출 #746562

#제출 시각아이디문제언어결과실행 시간메모리
746562Rafi22디지털 회로 (IOI22_circuit)C++17
18 / 100
3062 ms21264 KiB
#include <bits/stdc++.h> using namespace std; #define endl '\n' #define st first #define nd second #define pb push_back #define sz(x) (int)(x).size() #define all(x) (x).begin(), (x).end() #define ll long long ll mod=1000002022; int inf=1000000007; ll infl=1000000000000000007; const int N=200007,pot=1<<18; bool is[N]; vector<int>G[N]; ll ile[N]; vector<ll> P[N]; vector<ll> S[N]; ll seg[2*pot+7][2]; bool lzy[2*pot+7]; void push(int v) { if(lzy[v]) { swap(seg[2*v][0],seg[2*v][1]); swap(seg[2*v+1][0],seg[2*v+1][1]); lzy[2*v]^=1; lzy[2*v+1]^=1; lzy[v]=0; } } void ins(int v,int a,int b,int l,int r) { if(a<=l&&b>=r) { swap(seg[v][0],seg[v][1]); lzy[v]^=1; return ; } if(r<a||l>b) return ; push(v); ins(2*v,a,b,l,(l+r)/2); ins(2*v+1,a,b,(l+r)/2+1,r); seg[v][0]=seg[2*v][0]+seg[2*v+1][0]; seg[v][1]=seg[2*v][1]+seg[2*v+1][1]; } int n,m; void dfs(int v) { ile[v]=max(1,sz(G[v])); for(auto u:G[v]) { dfs(u); ile[v]=ile[v]*ile[u]%mod; } } void dfs1(int v,ll c) { if(sz(G[v])==0) { seg[v+pot-1][is[v]]=c; return ; } P[v].resize(sz(G[v])+2,1); for(int i=0;i<sz(G[v]);i++) P[v][i+1]=P[v][i]*ile[G[v][i]]%mod; S[v].resize(sz(G[v])+2,1); for(int i=sz(G[v])-1;i>=0;i--) S[v][i+1]=S[v][i+2]*ile[G[v][i]]%mod; for(int i=0;i<sz(G[v]);i++) { dfs1(G[v][i],c*P[v][i]%mod*S[v][i+2]%mod); } for(int i=pot-1;i>0;i--) { seg[i][0]=(seg[2*i][0]+seg[2*i+1][0])%mod; seg[i][1]=(seg[2*i][1]+seg[2*i+1][1])%mod; } } void init(int N,int M,vector<int>p,vector<int>a) { n=N,m=M; for(int i=0;i<m;i++) is[i+n]=a[i]; for(int i=1;i<n+m;i++) G[p[i]].pb(i); dfs(0); dfs1(0,1); } int count_ways(int l,int r) { ins(1,l,r,1,pot); return seg[1][1]%mod; }
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