Submission #59357773

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#include <bits/stdc++.h>
#define int long long
#define ALL(obj) obj.begin(), obj.end()
const int INF = (int)1 << 61;
const int MOD = 1000000007;
using namespace std;
signed main() {
    vector<int> balls(4);
    for (int &i : balls) cin >> i;
    sort(ALL(balls));
    int head = 1;
    int ans = 0;
    while (head < 4) {
        if (balls[head] == balls[head - 1]) {
            ans++;
            head += 2;
        } else {
            head++;
 
 
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#include <bits/stdc++.h>
#define int long long
#define ALL(obj) obj.begin(), obj.end()
const int INF = (int)1 << 61;
const int MOD = 1000000007;
using namespace std;

signed main() {
    vector<int> balls(4);
    for (int &i : balls) cin >> i;

    sort(ALL(balls));

    int head = 1;
    int ans = 0;
    while (head < 4) {
        if (balls[head] == balls[head - 1]) {
            ans++;
            head += 2;
        } else {
            head++;
        }
    }

    cout << ans << endl;

    return 0;
}

Submission Info

Judge Result