oj.uz

Submission #491674

# Submission time Handle Problem Language Result Execution time Memory
491674 2021-12-03T18:49:40 Z uncripted XORanges (eJOI19_xoranges) C++11
38 / 100
 519 ms 4692 KB 
#include<bits/stdc++.h>
using namespace std;
long long fl[400000];
long long fk[400000];
long long a[300000];	
long long n,q;
void updatel(long long s, long long x){
	while(s<=n){
	fl[s]=fl[s]^x;	
	 s+=s&(-s);	
	}
}	
long long getl(long long s){
	long long sum=0;
	while(s>0){
	
		sum=sum^fl[s];
		s-=s&(-s);	
	}
	return sum;
}

void updatek(long long s, long long x){
	while(s<=n){
	fk[s]=fk[s]^x;	
 	s+=s&(-s);	
	}
}	
long long getk(long long s){
	long long sum=0;
	while(s>0){
	
		sum=sum^fk[s];
		s-=s&(-s);	
	}
	return sum;
}

int main(){

	cin>>n>>q;

	for(long long i=1; i<=n; i++){
		cin>>a[i];
		if(i%2==0){
			updatel(i/2, a[i]);
		}else{
			updatek(i/2+1, a[i]);
		}
	}
	for(long long i=0; i<q; i++){
		long long x;
		cin>>x;
		if(x==1){
			long long x,y;
			cin>>x>>y;
			if(x%2==0){
				updatel(x/2, y^a[x]);
			}else{
				updatek(x/2+1, y^a[x]);
			}
		}else{
			long long x,y;
			cin>>x>>y;
			if((y-x+1)%2==0){
				cout<<"0"<<endl;
				continue;
			}
			if(x%2==0){
				long long tot;
				x--;
				tot=getl(y/2)^(getl(x/2));
				cout<<tot<<endl;
			}else{
			
				long long tot;
				
				tot=getk(y/2+1)^(getk(x/2));
				cout<<tot<<endl;
			}	
		}
	}
	
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 2 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 479 ms 4692 KB Output is correct
2 Correct 469 ms 4552 KB Output is correct
3 Correct 519 ms 4588 KB Output is correct
4 Correct 462 ms 4548 KB Output is correct
5 Correct 453 ms 4620 KB Output is correct

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -