Submission #634500

#	Time	Username	Problem	Language	Result	Execution time	Memory
634500		mosiashvililuka	Digital Circuit (IOI22_circuit)	C++17	18 / 100	3031 ms	7024 KiB

circuit

#include<bits/stdc++.h>
#include "circuit.h"
using namespace std;
long long a,b,c,d,e,i,j,ii,jj,zx,xc,msh[100009],f[100009],K[100009],mod=1000002022LL,pas,DP[100009],DP2[100009],DP3[100009];
vector <long long> v[100009];
void dfs(long long q, long long w){
    if(v[q].size()==0){
        DP[q]=1;
        return;
    }
    DP[q]=v[q].size();
    for(vector <long long>::iterator it=v[q].begin(); it!=v[q].end(); it++){
        dfs((*it),q);
        DP[q]*=DP[(*it)];DP[q]%=mod;
    }
    zx=1;
    for(vector <long long>::iterator it=v[q].begin(); it!=v[q].end(); it++){
        DP2[(*it)]=zx;
        zx*=DP[(*it)];zx%=mod;
    }
    vector <long long>::iterator it=v[q].end();it--;
    zx=1;
    while(1){
        DP2[(*it)]*=zx;DP2[(*it)]%=mod;
        zx*=DP[(*it)];zx%=mod;
        if(it==v[q].begin()) break;
        it--;
    }
}
void dfs2(int q, int w){
    DP3[q]*=DP2[q];DP3[q]%=mod;
    for(vector <long long>::iterator it=v[q].begin(); it!=v[q].end(); it++){
        DP3[(*it)]=DP3[q];
        dfs2((*it),q);
    }
}
void init(int NN, int MM, std::vector<int> PP, std::vector<int> AA) {
    a=NN+MM;
    for(i=1; i<a; i++){
        msh[i+1]=PP[i]+1;
        v[msh[i+1]].push_back(i+1);
    }
    for(i=NN+1; i<=a; i++){
        f[i]=AA[i-NN-1];
    }
    DP2[1]=1;DP3[1]=1;
    dfs(1,0);
    dfs2(1,0);
    for(i=NN+1; i<=a; i++){
        K[i]=DP3[i];
    }
}

int count_ways(int L, int R) {
    L++;R++;pas=0;
    for(i=L; i<=R; i++){
        if(f[i]==0) f[i]=1; else f[i]=0;
    }
    for(i=1; i<=a; i++){
        if(f[i]==1){
            pas+=K[i];
            if(pas>=mod) pas-=mod;
        }
    }
    return pas;
}

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