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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#463164#6631. Maximum Bitwise ORgrass8cow#WA 1ms5836kbC++171.9kb2024-07-04 14:42:182024-07-04 14:42:18

Judging History

你现在查看的是最新测评结果

  • [2024-07-04 14:42:18]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:5836kb
  • [2024-07-04 14:42:18]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int n,q,a[100100],l1[101000][30],l2[101000][470],M,id[30][30];
void sol(){
    scanf("%d%d",&n,&q);
    for(int i=1;i<=n;i++)scanf("%d",&a[i]);
    for(int j=0;j<30;j++)l1[n+1][j]=n+1;
    for(int j=0;j<M;j++)l1[n+1][j]=n+1;
    for(int i=n;i;i--){
        for(int j=0;j<30;j++)if((a[i]>>j)&1)l1[i][j]=i;else l1[i][j]=l1[i+1][j];
        int t=-1;
        for(int j=0;j<M;j++)
            l2[i][j]=l2[i+1][j];
        for(int j=0;j<30;j++)if((a[i]>>j)&1){
            for(int x=t+1;x<=j;x++)
            for(int y=x;y<=j;y++)
            l2[i][id[x][y]]=i;
            t=j;
        }
    }
    for(int io=1,l,r;io<=q;io++){
        scanf("%d%d",&l,&r);
        int z=-1;
        for(int j=29;j>=0;j--)if(l1[l][j]<=r){z=j;break;}
        printf("%d ",(1<<(z+1))-1);
        vector<int>vp;vp.push_back(l-1),vp.push_back(r+1);
        int kl=32,kr=-1,st=0;
        for(int j=z;j>=0;j--)if(l1[l][j]<=r){
            st|=(1<<j);
            int x=l1[l][j];
            if(l1[x+1][j]>r)vp.push_back(x);
        }
        else kl=min(kl,j),kr=max(kr,j);
        if(kr==-1){puts("0");continue;}
        sort(vp.begin(),vp.end());
        bool oo=0;
        for(int j=0;j+1<vp.size();j++){
            int x=vp[j],y=vp[j+1];if(x==y||x+1==y)continue;
            x++,y--;
            if(l2[x][id[kl][kr]]<=y){oo=1;break;}
        }
        int op=-1;
        for(int x:vp){
            if(x<l||x>r||op==x)continue;op=x;
            int sk=st;
            for(int i=0;i<30;i++)if(l1[l][i]==x&&l1[x+1][i]>r)sk^=(1<<i);
            for(int i=0;i<30;i++){
                if((1<<i)>a[x])break;
                if((sk|(a[x]^(a[x]-(1<<i))))==(1<<(z+1))-1)oo=1;
            }
        }
        if(oo)puts("1");else puts("2");
    }
}
int main(){
    M=0;
    for(int i=0;i<30;i++)for(int j=i;j<30;j++)
    id[i][j]=M++;
    int T;scanf("%d",&T);while(T--)sol();
    return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 5836kb

input:

1
3 2
10 10 5
1 2
1 3

output:

15 1
15 0

result:

wrong answer 2nd numbers differ - expected: '2', found: '1'