# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
379080 | gustason | Uzastopni (COCI17_uzastopni) | C++14 | 1087 ms | 364 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const ll INF = 1e18 + 5;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
ll n;
cin >> n;
for(int i = 2; i*i <= 3 * n; i++) {
// if (i % 2 == 0 && n % i != i/2) continue;
// if (i % 2 && n % i != 0) continue;
ll l = 1, r = n;
while(l <= r) {
ll mid = (l + r) / 2;
ll a0 = mid, an = mid + i - 1;
if (a0 + an > INF / i || (i * (a0 + an)) / 2 > n) {
r = mid - 1;
} else if ((i * (a0 + an)) / 2 == n) {
cout << a0 << " " << an << "\n";
break;
} else {
l = mid + 1;
}
}
}
return 0;
}
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---|---|---|---|---|
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