제출 #217688

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
217688		Sho10	XORanges (eJOI19_xoranges)	C++14	75 / 100	1096 ms	15200 KiB

xoranges

/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,q,a[200005],l,r,xorpar[200005],xorimpar[200005],tx[200005],lx[200005],rx[200005],verif=-1;
int32_t main(){
CODE_START;
cin>>n>>q;
xorpar[0]=0;
xorimpar[0]=0;
for(ll i=1;i<=n;i++)
{
    cin>>a[i];
    if(i%2==1){
        xorimpar[i]=(xorimpar[i-1]^a[i]);
        xorpar[i]=xorpar[i-1];
    }else {
        xorpar[i]=(xorpar[i-1]^a[i]);
        xorimpar[i]=xorimpar[i-1];
}
}
for(ll i=q-1;i>=0;i--)
{
 cin>>tx[i]>>lx[i]>>rx[i];
 if(tx[i]==1){
    verif=1;
 }
}
if(verif==-1){
while(q--){
        ll t;
    t=tx[q];
    l=lx[q];
    r=rx[q];
if(t==1){
    a[l]=r;
}else if(t==2){
ll s1=1;
ll val=a[l];
if(l%2!=r%2){
    cout<<0<<endl;
}else {
if(l%2==1){
    cout<<(xorimpar[r]^xorimpar[l-1])<<endl;
}else {
cout<<(xorpar[r]^xorpar[l-1])<<endl;
}
}
}
}
}else {
while(q--){
        ll t;
    t=tx[q];
    l=lx[q];
    r=rx[q];
if(t==1){
    a[l]=r;
}else if(t==2){
ll s1=1;
ll val=a[l];
if(l%2!=r%2){
    cout<<0<<endl;
}else {
for(ll i=l+1;i<=r;i++)
{
    if(s1%2==0){
        val=((val^a[i]));
        s1++;
    }else {
    s1++;
    }
}
cout<<val<<endl;
}
}
}
}
}

컴파일 시 표준 에러 (stderr) 메시지

xoranges.cpp: In function 'int32_t main()':
xoranges.cpp:57:4: warning: unused variable 's1' [-Wunused-variable]
 ll s1=1;
    ^~
xoranges.cpp:58:4: warning: unused variable 'val' [-Wunused-variable]
 ll val=a[l];
    ^~~

• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 25 / 25
• Subtask 4: 20 / 20
• Subtask 5: 0 / 25