Submission #30258055

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int n,m;
int b[1<<10][1<<10]={0};
int d[(1<<20)+5];
int a[(1<<20)+5];
int e[(1<<20)+5];
void dfs(int n1,int x,int y,int z){
    if(n1==1){
        b[z][x]^=a[y];
        return;
    }
    int n2=n1/2;
    dfs(n2,x+n2,y,z);
    dfs(n2,x,y+n2,z);
    dfs(n2,x,y,z);
}
void df2(int n1,int x,int y){
    if(n1==1){
        for(int i=x*(1<<10);i<(x+1)*(1<<10);i++){
            e[i]^=b[y][i-x*(1<<10)];
        }
        return;
    }
    int n2=n1/2;
    df2(n2,x+n2,y);
    df2(n2,x,y+n2);
    df2(n2,x,y);
}
int main(){
    scanf("%d%d",&n,&m);
    for(ll i=0;i<n;i++){
        scanf("%d",&a[n-1-i]);
    }
    for(ll j=0;j<m;j++) e[j]=0;
    for(int i=0;i<(1<<10);i++){
        dfs(1<<10,0,i*(1<<10),i);
    }
    df2(1<<10,0,0);
    for(ll j=0;j<m;j++){
        printf("%d ",e[j]);
    }
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:32:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   32 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
./Main.cpp:34:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   34 |         scanf("%d",&a[n-1-i]);
      |         ~~~~~^~~~~~~~~~~~~~~~

Judge Result