제출 #777421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
777421		alexander707070	디지털 회로 (IOI22_circuit)	C++17	16 / 100	850 ms	21948 KiB

circuit

#include<bits/stdc++.h>
#define MAXN 800007
using namespace std;

const long long mod=1000002022;

int n,m;
long long black[MAXN],white[MAXN];
long long prod[MAXN],total,diff,zeros;
vector<int> v[MAXN];

void dfs(int x){
    if(v[x].size()==0){
        prod[x]=1; return;
    }

    prod[x]=1;
    for(int i=0;i<v[x].size();i++){
        dfs(v[x][i]);
        prod[x]*=prod[v[x][i]];
        prod[x]%=mod;
    }
    prod[x]*=2; prod[x]%=mod;

    black[x]=0;
    /* c=2 */ black[x]+=black[v[x][0]]*black[v[x][1]];
    /* c=1 */ black[x]+=black[v[x][0]]*black[v[x][1]]+black[v[x][0]]*white[v[x][1]]+white[v[x][0]]*black[v[x][1]];
    black[x]%=mod;

    white[x]=(prod[x]-black[x]+mod)%mod;
}

long long power(long long x,int y){
    if(y==0)return 1;
    return (power(x,y-1)*x)%mod;
}

int lg(int x){
    if(x==1)return 0;
    return lg(x/2)+1;
}

int tree[MAXN],lazy[MAXN];

void psh(int v,int l,int r){
    if(lazy[v]==0)return;
    int tt=(l+r)/2;

    tree[2*v]=(tt-l+1)-tree[2*v];
    lazy[2*v]^=1; 
    
    tree[2*v+1]=(r-(tt+1)+1)-tree[2*v+1];
    lazy[2*v+1]^=1;

    lazy[v]=0;
}

void update(int v,int l,int r,int ll,int rr){
    if(ll>rr)return;
    if(l==ll and r==rr){
        tree[v]=(r-l+1)-tree[v];
        lazy[v]^=1;
    }else{
        int tt=(l+r)/2;
        psh(v,l,r);

        update(2*v,l,tt,ll,min(tt,rr));
        update(2*v+1,tt+1,r,max(tt+1,ll),rr);

        tree[v]=tree[2*v]+tree[2*v+1];
    }
}

void init(int N, int M,vector<int> P,vector<int> A){
    n=N; m=M;
    total=power(2,N);
    diff=power(2,N-lg(N+1));

    for(int i=0;i<M;i++){
        if(A[i]==1)update(1,0,M-1,i,i);
    }
}

int count_ways(int L, int R){
    L-=n; R-=n;
    update(1,0,m-1,L,R);
    zeros=m-tree[1];

    return (total-(diff*zeros)+mod*zeros)%mod;
}

/*
int main(){
    init(15, 16, {-1, 0, 0, 1, 1, 2, 2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15}, {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1});
    cout<<count_ways(15,29)<<"\n";
}
*/

컴파일 시 표준 에러 (stderr) 메시지

circuit.cpp: In function 'void dfs(int)':
circuit.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i=0;i<v[x].size();i++){
      |                 ~^~~~~~~~~~~~

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