[12:20]michael@dc:~/Projects/sandbox$ cat vector_it.cpp
#include<vector>
#include<cstdio>
#include<ctime>
#include<cstdlib>

using namespace std;

vector<int> v;

int main() {
    int n = 10000000;
    int res = 0;
    for(int i = 0; i < n; ++i) {
        v.push_back(rand()%2000000000);
    }
    for(vector<int>::iterator i = v.begin(); i != v.end(); ++i) {
        res ^= *i;
    }
    return 0;
}[12:22]michael@dc:~/Projects/sandbox$ cat vector_ind.cpp
#include<vector>
#include<cstdio>
#include<ctime>
#include<cstdlib>

using namespace std;

vector<int> v;

int main() {
    int n = 10000000;
    int res = 0;
    for(int i = 0; i < n; ++i) {
        v.push_back(rand()%2000000000);
    }
    for(size_t i = 0; i < v.size(); ++i) {
        res ^= v[i];
    }
    return 0;
}