Codeforces 475 D.CGCDSSQ

题目说了a的范围小于10^9次方，可实际却有超过的数据。。。真是醉了

算出以f[i]结尾的所有可能GCD值，并统计；

f[i]可以由f[i-1]得出.

/*
       递推算出所有GCD值，map统计
*/
#include <iostream>
#include <vector>
#include <map>
using namespace std;
#define ll long long
const int MAXN = ;
int n, m;
ll x;
map<ll , ll > sum, record[];
map<ll, ll>::iterator it;
ll gcd (ll a, ll b) {
    return b ==  ? a : gcd (b, a % b);
}
int main() {
    ios::sync_with_stdio ();
    cin >> n;
    int roll = ;
    for (int i = ; i <= n; i++, roll ^= ) {
        cin >> x;
        record[roll].clear();
        record[roll][x]++, sum[x]++;
        for (it = record[roll ^ ].begin(); it != record[roll ^ ].end(); ++it) {
            ll tem = gcd (x, (*it).first);
            sum[tem] += (*it).second;
            record[roll][tem] += (*it).second;
        }
    }
    cin >> m;
    for (int i = ; i <= m; i++) {
        cin >> x;
        cout << sum[x] << endl;
    }
}