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32 lines
570 B
32 lines
570 B
#include <bits/stdc++.h>
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using namespace std;
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int main() {
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//读入输出优化的强迫症
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ios::sync_with_stdio(false);
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int n;
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cin >> n;
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int a = 0, b = 0;
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for (int i = 0; i < n; i++) {
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int tmp;
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cin >> tmp;
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if (tmp == 5) a++;
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else b++;
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}
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if (!b) {
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cout << -1;
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return 0;
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}
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for (int i = 0; i < a / 9; i++) {
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cout << "555555555";
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}
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if (a / 9 == 0) {
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cout << 0;
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return 0;
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}
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for (int i = 0; i < b; i++) {
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cout << 0;
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}
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return 0;
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} |