Submission #697351

#	Time	Username	Problem	Language	Result	Execution time	Memory
697351		FEDIKUS	Digital Circuit (IOI22_circuit)	C++17	0 / 100	16 ms	7556 KiB

circuit

#include "circuit.h"

#include<bits/stdc++.h>
#include <vector>

using namespace std;

typedef long long ll;

const int maxn=2e5+10;
const int mod=1e9+2022;

int n,m;

vector<int> g[maxn];
vector<int> p,a;

int add(int a,int b){
  return (a+b)%mod;
}

int mul(int a,int b){
  return ll(a)*ll(b)%mod;
}

int bruk[maxn];
int power[maxn];

void dfs(int node){
  bruk[node]=1;
  if(node<n) bruk[node]=mul(bruk[node],g[node].size());
  for(int i:g[node]){
    dfs(i);
    bruk[node]=mul(bruk[node],bruk[i]);
  }
}

void dfs2(int node,int tren){
  if(node>=n){
    power[node-n]=tren;
    return;
  }
  vector<int> pref(g[node].size());
  vector<int> suf(g[node].size());
  for(int i=0;i<(int)g[node].size();i++){
    if(i==0) pref[i]=bruk[g[node][i]];
    else pref[i]=mul(pref[i-1],bruk[g[node][i]]);
  }
  for(int i=(int)g[node].size()-1;i>=0;i--){
    if(i==(int)g[node].size()-1) suf[i]=bruk[g[node][i]];
    else suf[i]=mul(suf[i+1],bruk[g[node][i]]);
  }
  for(int i=0;i<(int)g[node].size();i++){
    int ntren=tren;
    if(i>0) ntren=mul(ntren,pref[i-1]);
    if(i<(int)g[node].size()-1) ntren=mul(ntren,suf[i+1]);
    dfs2(g[node][i],ntren);
  }
}

void init(int N,int M, vector<int> P, vector<int> A) {
  n=N; m=M; p=P; a=A;
  for(int i=1;i<n+m;i++) g[p[i]].push_back(i);
  dfs(0);
  dfs2(0,1);
  for(int i=0;i<m;i++) cout<<power[i]<<" "; cout<<"\n";
  for(int i=0;i<n+m;i++) cout<<bruk[i]<<" "; cout<<"\n";
}

int count_ways(int L, int R) {
  L-=n;
  R-=n;
  for(int i=L;i<=R;i++) a[i]=!a[i];
  int ret=0;
  for(int i=0;i<m;i++) if(a[i]) ret=add(ret,power[i]);
  return ret;
}

Compilation message (stderr)

circuit.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>)':
circuit.cpp:66:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   66 |   for(int i=0;i<m;i++) cout<<power[i]<<" "; cout<<"\n";
      |   ^~~
circuit.cpp:66:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   66 |   for(int i=0;i<m;i++) cout<<power[i]<<" "; cout<<"\n";
      |                                             ^~~~
circuit.cpp:67:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   67 |   for(int i=0;i<n+m;i++) cout<<bruk[i]<<" "; cout<<"\n";
      |   ^~~
circuit.cpp:67:46: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   67 |   for(int i=0;i<n+m;i++) cout<<bruk[i]<<" "; cout<<"\n";
      |                                              ^~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 7
• Subtask 3: 0 / 9
• Subtask 4: 0 / 4
• Subtask 5: 0 / 12
• Subtask 6: 0 / 27
• Subtask 7: 0 / 28
• Subtask 8: 0 / 11