28 lines
506 B
C++
28 lines
506 B
C++
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#include<iostream>
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using namespace std;
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int main() {
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std::ios::sync_with_stdio(false);
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int a[32] = { 0 };
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unsigned int n, num, pos, ansnum = 0;
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int ans[32] = { 0 };
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cin >> n;
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//file >> n;
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for (int i = 0; i < 3 * n - 1; i++) {
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cin >> num;
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//file >> num;
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for (pos = 0; pos < 32; pos++) {
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if((num>>pos)&1)
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a[pos] += 1;
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}
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}
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for (int i = 0; i < 32; i++) {
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if (a[i] % 3) {
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ans[i] = 1;
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}
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}
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for (int i = 0; i < 32; i++) {
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ansnum *= 2;
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ansnum += ans[31-i];
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}
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cout << ansnum;
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}
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