// __builtin_popcount(x) broj bitova
// __builtin_popcountll(x) long long
#define here cerr<<"---------------------------\n"
#include <bits/stdc++.h>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
#define rall(a) a.begin(),a.end(),greater<int>()
using namespace std;
void setIO(string inoutname)
{
freopen((inoutname+".in").c_str(),"r",stdin);
freopen((inoutname+".out").c_str(),"w",stdout);
}
ll gcd(ll a, ll b)
{
if(b==0) return a;
if(a==0) return b;
if(a>=b) return gcd(a%b,b);
return gcd(a,b%a);
}
#define maxn 200005
ll n;
ll a[maxn];
ll b[maxn];
ll sega[maxn];
ll segb[maxn];
void inita(ll v,ll l,ll r){
if(l==r){
sega[v] = a[l];
return;
}
ll mid = (l+r)/2;
inita(2*v,l,mid);
inita(2*v+1,mid+1,r);
sega[mid] = sega[2*mid]^sega[2*mid+1];
}
ll xora(ll v,ll tl,ll tr,ll l,ll r){
if(l>r) return 0;
if(tl==l&&tr==r){
return sega[v];
}
ll mid = (tl+tr)/2;
return xora(2*v,tl,mid,l,min(mid,r))^xora(2*v+1,mid+1,r,max(mid+1,l),r);
}
void upda(ll v,ll tl,ll tr,ll val,ll pos){
if(tl==tr){
a[tl] = val;
sega[v] = val;
return;
}
ll mid = (tl+tr)/2;
if(pos<=mid) upda(2*v,tl,mid,val,pos);
else upda(2*v+1,mid+1,tr,val,pos);
sega[v] = sega[2*v]^sega[2*v+1];
}
void initb(ll v,ll l,ll r){
if(l==r){
segb[v] = b[l];
return;
}
ll mid = (l+r)/2;
inita(2*v,l,mid);
inita(2*v+1,mid+1,r);
segb[mid] = segb[2*mid]^segb[2*mid+1];
}
ll xorb(ll v,ll tl,ll tr,ll l,ll r){
if(l>r) return 0;
if(tl==l&&tr==r){
return segb[v];
}
ll mid = (tl+tr)/2;
return xorb(2*v,tl,mid,l,min(mid,r))^xorb(2*v+1,mid+1,r,max(mid+1,l),r);
}
void updb(ll v,ll tl,ll tr,ll val,ll pos){
if(tl==tr){
b[tl] = val;
segb[v] = val;
return;
}
ll mid = (tl+tr)/2;
if(pos<=mid) updb(2*v,tl,mid,val,pos);
else updb(2*v+1,mid+1,tr,val,pos);
segb[v] = segb[2*v]^segb[2*v+1];
}
void tc(){
ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
ll tip;
cin >> tip;
if(tip == 1){
ll pos,val;
cin >> pos >> val;
if(pos&1) upda(1,1,n,val,pos);
else updb(1,1,n,val,pos);
}else{
ll l,r;
cin >> l >> r;
if(r-l+1==0) cout<<0<<endl;
else{
if(l&1) cout<<xora(1,1,n,l,r)<<endl;
else cout<<xora(1,1,n,l,r)<<endl;
}
}
}
int main(){
ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
//setIO("lol");
int t; t = 1;
cin >> n >> t;
for(ll i = 1;i<=n;i++){
if(i&1) cin >> a[i];
else cin >> b[i];
}
inita(1,1,n);
initb(1,1,n);
while(t--){
tc();
}
return 0;
}
Compilation message
xoranges.cpp: In function 'void setIO(std::string)':
xoranges.cpp:24:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
24 | freopen((inoutname+".in").c_str(),"r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
xoranges.cpp:25:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
25 | freopen((inoutname+".out").c_str(),"w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
336 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
168 ms |
11584 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
