| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 508647 | 2022-01-13T13:34:04 Z | uncripted | Xor Sort (eJOI20_xorsort) | C++11 | 67 ms | 1548 KB |
#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
long long power[23];
long long pas[40005][3];
long long n;
void pow2calc(long long x){
power[1]=1;
for(long long i=2; i<=x; i++){
power[i]=power[i-1]*2;
}
}
pair<long long,long long> aa[2000002];
long long a1[2000002];
long long a[2000005];
int main(){
long long s;
pow2calc(22);
cin>>n;
cin>>s;
if(s==1){
long long k=0;
for(long long i=1; i<=n; i++){
cin>>a[i];
a1[i]=a[i];
aa[i].ff=a[i];
aa[i].ss=i;
}
sort(aa+1, aa+n+1);
long long lastsort=n;
while(lastsort!=1){
long long maxi=aa[lastsort].ss;
for(long long i=1; i<=lastsort-1; i++ ){
k++;
pas[k][1]=i;
pas[k][2]=i+1;
a1[i]=a1[i]^a1[i+1];
}
for(long long i=maxi+1; i<=lastsort; i++){
k++;
pas[k][1]=i;
pas[k][2]=i-1;
a1[i]=a1[i]^a1[i-1];
}
for(long long i=maxi-2; i>=1; i--){
k++;
pas[k][1]=i;
pas[k][2]=i+1;
a1[i]=a1[i]^a1[i+1];
}
for(long long i=1; i<=n; i++){
if(aa[i].ss>maxi){
aa[i].ss--;
}
}
lastsort--;
}
for(long long i=n-1; i>=1; i--){
k++;
pas[k][1]=i;
pas[k][2]=i+1;
a1[i]=a1[i]^a1[i+1];
}
cout<<k<<endl;
for(long long i=1; i<=k; i++){
cout<<pas[i][1]<<" "<<pas[i][2]<<endl;
}
cout<<endl;
for(long long i=1; i<=n; i++){
// cout<<a1[i]<<" ";
}
}
if(s==2){
long long ax[n+1];
long long k=0;
for(long long i=1; i<=n; i++){
cin>>ax[i];
}
long long last=n;
for(long long i=22; i>=1; i--){
bool f=false;
for(long long jj=1; jj<last; jj++){
f=true;
if((power[i]&ax[jj])!=0){
if((power[i]&ax[jj+1])==0){
k+=2;
ax[jj+1]=(ax[jj]^a[jj+1]);
ax[jj]=(ax[jj]^ax[jj+1]);
pas[k-1][1]=jj+1;
pas[k-1][2]=jj;
pas[k][1]=jj;
pas[k][2]=jj+1;
}else{
k++;
ax[jj]=(ax[jj]^ax[jj+1]);
pas[k][1]=jj;
pas[k][2]=jj+1;
}
}
}
// last--;
}
cout<<k<<endl;
for(long long i=1; i<=k; i++){
cout<<pas[i][1]<<" "<<pas[i][2]<<endl;
}
for(long long i=1; i<=n; i++){
// cout<<ax[i]<<" ";
}
}
}
Compilation message
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 204 KB | Output is correct |
| 2 | Correct | 1 ms | 204 KB | Output is correct |
| 3 | Correct | 5 ms | 332 KB | Output is correct |
| 4 | Correct | 29 ms | 900 KB | Output is correct |
| 5 | Correct | 31 ms | 920 KB | Output is correct |
| 6 | Correct | 32 ms | 924 KB | Output is correct |
| 7 | Correct | 32 ms | 952 KB | Output is correct |
| 8 | Correct | 37 ms | 928 KB | Output is correct |
| 9 | Correct | 32 ms | 900 KB | Output is correct |
| 10 | Correct | 28 ms | 924 KB | Output is correct |
| 11 | Correct | 31 ms | 928 KB | Output is correct |
| 12 | Correct | 28 ms | 948 KB | Output is correct |
| 13 | Correct | 28 ms | 972 KB | Output is correct |
| 14 | Correct | 29 ms | 960 KB | Output is correct |
| 15 | Correct | 36 ms | 964 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 204 KB | Output is correct |
| 2 | Correct | 1 ms | 204 KB | Output is correct |
| 3 | Correct | 5 ms | 332 KB | Output is correct |
| 4 | Correct | 29 ms | 900 KB | Output is correct |
| 5 | Correct | 31 ms | 920 KB | Output is correct |
| 6 | Correct | 32 ms | 924 KB | Output is correct |
| 7 | Correct | 32 ms | 952 KB | Output is correct |
| 8 | Correct | 37 ms | 928 KB | Output is correct |
| 9 | Correct | 32 ms | 900 KB | Output is correct |
| 10 | Correct | 28 ms | 924 KB | Output is correct |
| 11 | Correct | 31 ms | 928 KB | Output is correct |
| 12 | Correct | 28 ms | 948 KB | Output is correct |
| 13 | Correct | 28 ms | 972 KB | Output is correct |
| 14 | Correct | 29 ms | 960 KB | Output is correct |
| 15 | Correct | 36 ms | 964 KB | Output is correct |
| 16 | Correct | 0 ms | 204 KB | Output is correct |
| 17 | Correct | 30 ms | 952 KB | Output is correct |
| 18 | Correct | 53 ms | 1388 KB | Output is correct |
| 19 | Correct | 56 ms | 1492 KB | Output is correct |
| 20 | Correct | 63 ms | 1460 KB | Output is correct |
| 21 | Correct | 50 ms | 1488 KB | Output is correct |
| 22 | Correct | 51 ms | 1440 KB | Output is correct |
| 23 | Correct | 67 ms | 1464 KB | Output is correct |
| 24 | Correct | 62 ms | 1412 KB | Output is correct |
| 25 | Correct | 62 ms | 1428 KB | Output is correct |
| 26 | Correct | 60 ms | 1548 KB | Output is correct |
| 27 | Correct | 61 ms | 1380 KB | Output is correct |
| 28 | Correct | 56 ms | 1412 KB | Output is correct |
| 29 | Correct | 52 ms | 1420 KB | Output is correct |
| 30 | Correct | 51 ms | 1432 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 204 KB | Output is correct |
| 2 | Incorrect | 0 ms | 204 KB | Not sorted |
| 3 | Halted | 0 ms | 0 KB | - |