제출 #249917

#제출 시각아이디문제언어결과실행 시간메모리
249917NONAMEUzastopni (COCI17_uzastopni)C++14
0 / 80
11 ms384 KiB
#include  <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;
using ld = long double;

ll sm(ll x) {
    return (x * (x + 1)) / 2;
}

int main() {
    fast_io;

    ll n, ans = 0;

    cin >> n;
    for (int i = 2; sm(i) <= n; ++i) {
        ll l = 1, r = sqrt(n) + 10;
        while (l < r) {
            ll md = (l + r) >> 1;
            if (sm(md + i - 1) - sm(md - 1) < n) l = md + 1;
                else r = md;
        }

        if ((sm(l + i - 1) - sm(l - 1)) == n)
            cout << l << " " << l + i - 1 << "\n";
    }
}

컴파일 시 표준 에러 (stderr) 메시지

uzastopni.cpp: In function 'int main()':
uzastopni.cpp:15:11: warning: unused variable 'ans' [-Wunused-variable]
     ll n, ans = 0;
           ^~~
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