Submission #457680

#	Time	Username	Problem	Language	Result	Execution time	Memory
457680		mansur	XORanges (eJOI19_xoranges)	C++14	0 / 100	1094 ms	1740 KiB

xoranges

#include<bits/stdc++.h>

#pragma optimize ("g",on)
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
             		
using namespace std;

#define all(a) a.begin(), a.end()
#define ll long long
#define pb push_back
#define nl '\n'
#define popb pop_back()
#define sz size()
#define ld long double
#define ull unsigned long long
#define F first
#define S second
#define fix fixed << setprecision
#define pii pair<int, int>
#define E exit (0)
#define int long long

const int inf = (1ll << 62ll), N = 1e5 + 1, mod = 998244353;                    

vector<pii> dd = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};

signed main() {
	//freopen("invtrans.in", "r", stdin);
	//freopen("invtrans.out", "w", stdout);
	ios_base::sync_with_stdio(NULL);
	cin.tie(NULL);
	int n, q;
	cin >> n >> q;
	int a[n + 1];
	for (int i = 1; i <= n; i++) cin >> a[i];
	while (q--) {
		int tp;
		cin >> tp;
		if (tp == 1) {
		    int i, j;
		   	cin >> i >> j;
		   	a[i] = j;
		}else {
			int l, r;
			cin >> l >> r;
			int ans = 0;
			for (int i = l; i <= r; i++) {
				for (int j = i; j <= r; j++) {
					ans ^= a[j];
				}
			}                  
			cout << ans << nl;
		}
	}
}      

Compilation message (stderr)

xoranges.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize ("g",on)
      |

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