Submission #62047917

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Source Code Expand

#include <bits/stdc++.h>

#include <atcoder/all>

using namespace std;
using namespace atcoder;

using ll = long long;

#define rep(i, n) for(int i = 0; (i) < (int)(n); ++(i))
#define rep_r(i, n) for(int i = (int)(n) - 1; (i) >= 0; --(i))
#define all(x) begin(x), end(x)

int main() {
    // input
    int N;
    cin >> N;
    vector<int> A(N);
    rep(i, N) cin >> A[i];

    // calc
    double ratio = (double)A[1] / A[0];
    bool result = true;
    rep(i, N - 1) {
        if(A[i] * ratio != A[i + 1]) result = false;
    }

    // output
    if(result) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
}

Submission Info

Judge Result