Submission #1145696

#	Time	Username	Problem	Language	Result	Execution time	Memory
1145696		hennessey	Sirni (COCI17_sirni)	C++20	0 / 140	5099 ms	157888 KiB

sirni

#include <bits/stdc++.h>

using namespace std;

#define int long long

vector <int> arr = {};
vector <int> cnt(1e7+2);
vector <int> di(1e7+2);

signed main() {
    //your code goes here
    int n;
    cin >> n;
    for(int i = 0; i < n; i++) {
        int num;
        cin >> num;
        arr.push_back(num);
        cnt[num] = 1;
    }
    for(int i = 1; i <= 1e7; i++) {
        if(cnt[i] == 0) {
            continue;
        }
        for(int j = i*2; j <= 1e7; j+=i) {
            di[j]++;
        }
    }
    sort(arr.begin(), arr.end());
    int root = 1e8/n;
    root += 10;
    int total = 0;
    for(int i = 0; i < n; i++) {
        if(i == 0) {
            continue;
        }
        int v = arr[i];
        int t1 = 1e18;
        for(int j = 0; j < n; j++) {
            int v2 = arr[j];
            if(i == j) {
                continue;
            }
            // cout << v2 << " V " << endl;
            if(di[v2] > 0 || cnt[v2] == 1) {
                t1 = min(t1, min(v%v2, v2%v));
                // break;
            }
        }
        // cout << t1 << endl;
        total += t1;
    }
    cout << total << endl;
    return 0;
}

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