Submission #4021851

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Source Code Expand

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
//#include <math.h>
#include <algorithm>
#include <vector>
#pragma warning(disable:4996)

typedef long long ll;
#define MIN(a, b) ((a)>(b)? (b): (a))
#define MAX(a, b) ((a)<(b)? (b): (a))
#define MOD 1000000007
using namespace std;

long a[200005];

int main(int argc, char* argv[])
{
    long n;
    scanf("%ld", &n);

    long i;
    for(i=0; i<n; i++) {
        scanf("%ld", &(a[i]));
    }

    ll   ans=0;
    ll   sum=0;
    ll   sumx=0;
    long left=0;
    long right=0;
    for(right=0; right<n; right++) {
        sum +=a[right];
        sumx^=a[right];
        while(sum!=sumx) {
            sum -= a[left];
            sumx ^= a[left];
            left++;
        }
        ans += (right-left+1);
    }
    
    printf("%lld\n", ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:20:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%ld", &n);
                     ^
./Main.cpp:24:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%ld", &(a[i]));
                              ^

Judge Result