Submission #642530

#	Time	Username	Problem	Language	Result	Execution time	Memory
642530		Urvuk3	XORanges (eJOI19_xoranges)	C++17	55 / 100	13 ms	1996 KiB

xoranges

#include <bits/stdc++.h>
#include <chrono>
#define ll long long
#define ull unsigned long long
#define ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define inf 1e15
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
using namespace std::chrono;
const int maxn = 1e5+1;
int a[maxn];
int main(){
	int n,q;
	scanf("%d %d",&n,&q);
	for(int i = 0;i<n;i++){
        scanf("%d",&a[i]);
	}
	int qu;
	int l,u;
	int ans;
	while(q--){
        cin >> qu>> l >> u;
        if(qu==1){
            a[l-1]=u;
        }else{
            ans = 0;
            if((u-l+1)%2==0){
                printf("0\n");
            }else{
                for(int i = l-1;i<=u-1;i+=2){
                    ans^=a[i];
                }
                printf("%lld\n",ans);
            }
        }
	}
}

Compilation message (stderr)

xoranges.cpp:5:9: warning: ISO C++11 requires whitespace after the macro name
    5 | #define ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
      |         ^~~~~~~~
xoranges.cpp: In function 'int main()':
xoranges.cpp:38:28: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=]
   38 |                 printf("%lld\n",ans);
      |                         ~~~^    ~~~
      |                            |    |
      |                            |    int
      |                            long long int
      |                         %d
xoranges.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  scanf("%d %d",&n,&q);
      |  ~~~~~^~~~~~~~~~~~~~~
xoranges.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         scanf("%d",&a[i]);
      |         ~~~~~^~~~~~~~~~~~

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