Submission #474655

#	Time	Username	Problem	Language	Result	Execution time	Memory
474655		LptN21	Uzastopni (COCI17_uzastopni)	C++14	80 / 80	2 ms	292 KiB

uzastopni

#include <bits/stdc++.h>
using namespace std;
#define fastIO ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL)
#define PI acos(-1.0)
#define FF first
#define SS second
#define eps 1e-9
// vector
#define pb push_back
#define sz(v) int((v).size())
#define all(v) (v).begin(), (v).end()
#define lb lower_bound
#define ub upper_bound
// bit
#define CNTBIT(x) __builtin_popcount(x)
#define ODDBIT(x) __builtin_parity(x)
#define MASK(i) (1ll<<(i))
#define BIT(x, i) (((x)>>(i))&1)
#define SUBSET(big, small) (((big)&(small))==(small))
#define MINBIT(x) (x)&(-x)
// typedef
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> ii;
typedef pair<int, ii> i3;
/* CODE BELOW */
const int N=1e5+7, M=30;
const int MOD=1e9+7;
const int oo=1e8+7;

int n, m, k, t;



signed main() {
    //freopen("tlt.inp", "r", stdin);
    //freopen("tlt.out", "w", stdout);
    //fastIO;
    ll n; scanf("%lld", &n);
    vector<ii> a;
    for(ll i=1;i*i<=2*n;i++) {
        ll x=(2*n-i*i-i);
        ll y=2*(i+1);
        if(x%y) continue;
        a.pb(ii(-x/y, x/y+i));
    }
    sort(all(a));
    for(ii tmp:a) printf("%lld %lld\n", -tmp.FF, tmp.SS);
    return 0;
}
/* stuff you should look for
    - int overflow, array bounds
    - special/edge cases (n=1?)
    - do smth instead of nothing and stay organized
    - WRITE STUFF DOWN
    - DONT JUST STICK ON ONE APPROACH
*/

Compilation message (stderr)

uzastopni.cpp: In function 'int main()':
uzastopni.cpp:40:16: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     ll n; scanf("%lld", &n);
      |           ~~~~~^~~~~~~~~~~~

• Subtask 1: 80 / 80