LSPITO - Help Conan ! (version 3)

Tác giả: ladpro98

Ngôn ngữ: C++

#include <bits/stdc++.h>
const int N = 2000000;
const long long lim = trunc(1e12);
using namespace std;
long long a[N];
int n;
long long k;

bool isPow2(long long x) {
    while (x % 2 == 0) x = x / 2;
    if (x == 1) return true;
    return false;
}

bool BS(long long key) {
    int l = 1, r = n, m;
    while (l <= r) {
        m = (l + r) / 2;
        if (a[m] == key) return true;
        if (a[m] < key) l = m + 1; else r = m - 1;
    }
    return false;
}

int main()
{
    int i = 1, cnt = 0;
    long long j = 2;
    for(i=1; i<N; i++) {
        a[i] = a[i-1] + j; cnt++;
        if (a[i] > lim) break;
        if (cnt >= 2) {
            cnt = 0; j++; continue;
        }
        if (isPow2(j)) {
            cnt = 0; j++;
        }
    }
    n = i;
    while (scanf("%lld", &k) == 1) {
        if (BS(k)) printf("Thu Uyen\n");
        else printf("Conan\n");
    }
    return 0;
}

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