This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include"circuit.h"
#include<bits/stdc++.h>
using namespace std;
const long long MOD = 1000002022;
long long MUL(long long A, long long B) {
return A * B % MOD;
}
long long ADD(long long A, long long B) {
A += B;
if(A >= MOD) A -= MOD;
return A;
}
long long SUB(long long A, long long B) {
A -= B;
if(A < 0) A += MOD;
return A;
}
int N, M;
vector<vector<int>> ch;
vector<int> par, stat;
vector<long long> sz, val;
long long ans;
void dfs(int s) {
if(ch[s].empty()) {
sz[s] = 1LL;
return;
}
sz[s] = 2LL;
for(auto& u : ch[s]) {
dfs(u);
sz[s] = MUL(sz[s], sz[u]);
}
}
void ass_val(int s, long long v) {
if(ch[s].empty()) { val[s - N] = v; return; }
ass_val(ch[s][0], MUL(v, sz[ch[s][1]]));
ass_val(ch[s][1], MUL(v, sz[ch[s][0]]));
}
const int maxn = 100000;
bool lazy[4 * maxn];
long long sum[4 * maxn], st[4 * maxn];
void build(int v, int tl, int tr) {
if(tl == tr) {
sum[v] = val[tl];
if(stat[tr]) st[v] = sum[v];
return;
}
int tm =(tl + tr) / 2;
build(2 * v + 1, tl, tm);
build(2 * v + 2, tm + 1, tr);
sum[v] = ADD(sum[2 * v + 1], sum[2 * v + 2]);
st[v] = ADD(st[2 * v + 1], st[2 * v + 2]);
}
void update(int v, int tl, int tr, int l, int r) {
if(tl == l && tr == r) {
lazy[v] ^= true;
st[v] = SUB(sum[v], st[v]);
return;
}
int tm = (tl + tr) / 2;
if(lazy[v]) {
lazy[v] = false;
lazy[2 * v + 1] ^= true;
st[2 * v + 1] = SUB(sum[2 * v + 1], st[2 * v + 1]);
lazy[2 * v + 2] ^= true;
st[2 * v + 2] = SUB(sum[2 * v + 2], st[2 * v + 2]);
}
if(r <= tm) {
update(2 * v + 1, tl, tm, l, r);
} else if(l > tm) {
update(2 * v + 2, tm + 1, tr, l, r);
} else {
update(2 * v + 1, tl, tm, l, tm);
update(2 * v + 2, tm + 1, tr, tm + 1, tr);
}
st[v] = ADD(st[2 * v + 1], st[2 * v + 2]);
}
void init(int _N, int _M, vector<int> P, vector<int> A) {
N = _N; M = _M;
swap(P, par);
swap(A, stat);
val.resize(M);
ch.resize(N + M);
sz.resize(N + M);
for(int i = 1; i < N + M; ++i) {
ch[par[i]].push_back(i);
}
dfs(0);
ass_val(0, 1LL);
build(0, 0, M - 1);
}
int count_ways(int L, int R) {
L -= N; R -= N;
update(0, 0, M - 1, L, R);
return st[0];
}
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