oj.uz

Submission #1067638

# Submission time Handle Problem Language Result Execution time Memory
1067638 2024-08-20T22:15:03 Z raduv XORanges (eJOI19_xoranges) C++14
100 / 100
 35 ms 3932 KB 
#include <stdio.h>
#include <ctype.h>


const int MAXN = 2e5;
using namespace std;
int aib[2][MAXN + 1];
int v[MAXN + 1];
void update(int poz, int x, int n){
  int i;
  for( i = poz; i <= n; i += i & -i){
    aib[poz & 1][i] ^= x;
  }
}
int query(int poz, int par){
  int rez = 0, i;
  for( i = poz; i > 0; i = (i & (i - 1))){
    rez ^= aib[par][i];
  }
  return rez;
}
static inline int getInt(){
  int n = 0, ch;
  while(!isdigit(ch = getc(stdin)));
  do
    n = n * 10 + ch - '0';
  while (isdigit(ch = getc(stdin)));
  return n;
}
int main(){
  int n, q, i, op, l, r;
  n = getInt();
  q = getInt();
  for( i = 1; i <= n; i++ ){
    v[i] = getInt();
    update(i, v[i], n);
  }
  for( i = 0; i < q; i++ ){
    op = getInt();
    l = getInt();
    r = getInt();
    if(op == 1){
      update(l, v[l] ^ r, n);
      v[l] = r;
    }
    else{
      if( (r - l) & 1 ){
        printf("0\n");
      }
      else{
        printf("%d\n", query(r, r & 1) ^ query(l - 1, l & 1));
      }
    }
  }
  return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 3924 KB Output is correct
2 Correct 30 ms 3932 KB Output is correct
3 Correct 29 ms 3924 KB Output is correct
4 Correct 30 ms 3924 KB Output is correct
5 Correct 26 ms 3736 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 35 ms 3924 KB Output is correct
16 Correct 30 ms 3932 KB Output is correct
17 Correct 29 ms 3924 KB Output is correct
18 Correct 30 ms 3924 KB Output is correct
19 Correct 26 ms 3736 KB Output is correct
20 Correct 32 ms 3100 KB Output is correct
21 Correct 27 ms 3164 KB Output is correct
22 Correct 27 ms 3160 KB Output is correct
23 Correct 29 ms 3676 KB Output is correct
24 Correct 29 ms 3672 KB Output is correct