29 lines
585 B
C++
29 lines
585 B
C++
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#include <iostream>
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using namespace std;
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long long xors(long long n) {
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const long long X = 1000000007;
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if (n * n < X) {
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return n % 2;
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}
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long long result = 0;
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long long j = 1;
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while (j <= n) {
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long long val = X / j;
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long long left = j;
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long long right = min(n, X / val);
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long long count = right - left + 1;
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result ^= count;
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j = right + 1;
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}
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return result;
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}
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int main() {
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int t;
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cin >> t;
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while (t-- > 0) {
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long long n;
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cin >> n;
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cout << xors(n) << endl;
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}
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}
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