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26 lines
465 B
C++
26 lines
465 B
C++
#pragma GCC optimize("Ofast")
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#include <bits/stdc++.h>
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using namespace std;
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int t, n;
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string s[2];
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bool flag;
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> t;
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while (t--) {
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flag = true;
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cin >> n >> s[0] >> s[1];
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for (int i = 0; i < n; i++) {
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if (s[0][i] == '1' && s[1][i] == '1') {
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flag = false;
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}
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}
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cout << (flag ? "YES" : "NO") << endl;
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}
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return 0;
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}
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