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Submission #1089103

# Submission time Handle Problem Language Result Execution time Memory
1089103 2024-09-16T05:06:23 Z Muhammet XORanges (eJOI19_xoranges) C++17
0 / 100
 433 ms 9668 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 2e5+5;

int n, q, st[5][N*4];

vector <int> a;

int bld(int nd, int l, int r, bool z){
	if(l == r) return st[z][nd] = a[l*2-z];
	int md = (l + r)  / 2;
	return st[z][nd] = (bld(nd*2,l,md,z) ^ bld(nd*2+1,md+1,r,z));
}

int upd(int nd, int l, int r, int ind, int vl, bool z){
	if(l > ind or r < ind) return st[z][nd];
	if(l == r) return st[z][nd] = vl;
	int md = (l + r) / 2;
	return st[z][nd] = (upd(nd*2,l,md,ind,vl,z) ^ upd(nd*2+1,md+1,r,ind,vl,z));
}

int fnd(int nd, int l, int r, int x, int y, bool z){
	if(l > y or r < x) return 0;
	if(l >= x and r <= y) return st[z][nd];
	int md = (l + r) / 2;
	return (fnd(nd*2,l,md,x,y,z) ^ fnd(nd*2+1,md+1,r,x,y,z));
}

int main(){
	cin >> n >> q;

	a.assign(n+1,0);

	for(int i = 1; i <= n; i++){
		cin >> a[i];
	}

	if(n > 1) bld(1,1,n/2,0);
	bld(1,1,(n+1)/2,1);

	while(q--){
		int t, l, r;
		cin >> t >> l >> r;
		int x = (l%2);
		if(t == 1){
			upd(1,1,(n+x)/2,(l+x)/2,r,x);
		}
		else {
			if((r-l+1) % 2 == 0){
				l++;
				x = (l%2);
			}
			cout << fnd(1,1,(n+x)/2,(l+x)/2,(r+x)/2,x) << '\n';
		}
	}
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 433 ms 9668 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -