Submission #1048894

#	Time	Username	Problem	Language	Result	Execution time	Memory
1048894		Nickpapadak	XORanges (eJOI19_xoranges)	C++14	18 / 100	1066 ms	3932 KiB

xoranges

#include<bits/stdc++.h>
using namespace std;
const unsigned int MAXN = 2e+5 + 10;
int pf[MAXN], a[MAXN];
int N, Q;
int main(){
    scanf("%d%d",&N,&Q);
    for(int i = 1; i<=N;++i){
        scanf("%d",&a[i]);
        pf[i] = pf[i-1] ^ a[i];
    }
    while(Q--){
        int a,b, type;
        scanf("%d%d%d", &type, &a, &b);
        if(type == 2){
            int ans = 0;
            for(int i = 1; i <= b; ++i){
                for(int j = a; j+i-1 <= b;++j){
                    ans ^= (pf[j+i-1] ^ pf[j-1]);
                }
            }
            printf("%d\n", ans);
        }
    }
    return 0;
}

Compilation message (stderr)

xoranges.cpp: In function 'int main()':
xoranges.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d%d",&N,&Q);
      |     ~~~~~^~~~~~~~~~~~~~
xoranges.cpp:9:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |         scanf("%d",&a[i]);
      |         ~~~~~^~~~~~~~~~~~
xoranges.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         scanf("%d%d%d", &type, &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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