oj.uz

답안 #468801

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
468801 2021-08-29T17:43:10 Z errorgorn CONSUL (info1cup19_consul) C++17
35 / 100
 32 ms 200 KB 
//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include "grader.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << ": " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define ub upper_bound

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

const int MOD=998244353;

ll qexp(ll b,ll p,int m){
    ll res=1;
    while (p){
        if (p&1) res=(res*b)%m;
        b=(b*b)%m;
        p>>=1;
    }
    return res;
}

ll inv(ll i){
	return qexp(i,MOD-2,MOD);
}

ll fix(ll i){
	i%=MOD;
	if (i<0) i+=MOD;
	return i;
}

ll fac[1000005];
ll ifac[1000005];

ll nCk(int i,int j){
	if (i<j) return 0;
	return fac[i]*ifac[j]%MOD*ifac[i-j]%MOD;
}

void solve(int n){
	vector<int> v;
	rep(x,1,n+1) v.pub(x);
	shuffle(all(v),rng);
	
	rep(x,0,min(n,25)){
		int pos=kth(v[x]);
		if (cnt(pos)>n/3){
			say_answer(pos);
			return;
		}
	}
	
	say_answer(-1);
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 200 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 200 KB Output is correct
2 Correct 10 ms 200 KB Output is correct

Subtask #3
0.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 200 KB Output is correct
2 Correct 23 ms 200 KB Output is correct
3 Correct 13 ms 200 KB Output is correct
4 Correct 11 ms 200 KB Output is correct
5 Correct 30 ms 200 KB Output is correct
6 Correct 24 ms 200 KB Output is correct
7 Correct 28 ms 200 KB Output is correct
8 Correct 29 ms 200 KB Output is correct
9 Correct 22 ms 200 KB Output is correct
10 Correct 22 ms 200 KB Output is correct
11 Correct 32 ms 200 KB Output is correct
12 Correct 25 ms 200 KB Output is correct
13 Incorrect 2 ms 200 KB Wrong answer
14 Halted 0 ms 0 KB -