| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1254934 | thdh__ | Library (JOI18_library) | C++20 | 0 ms | 0 KiB |
#include <bits/stdc++.h>
#include "library.h"
#define ll long long
#define pb push_back
#define eb emplace_back
#define pu push
#define ins insert
#define fi first
#define se second
#define all(a) a.begin(),a.end()
#define bruh ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define fu(x,a,b) for (auto x=a;x<=b;x++)
#define fd(x,a,b) for (auto x=a;x>=b;x--)
using namespace std;
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
/*
Competitive Programming notes that I need to study & fix my dumbass self:
1. Coding:
- Always be sure to check the memory of arrays (maybe use vectors), for loops
- Always try to maximize the memory if possible, even if you are going for subtasks
- Do not exploit #define int long long, it will kill you
2. Stress:
- Always try generating big testcases and try if they run
3. Time management:
- Don't overcommit or undercommit, always spend a certain amount of time to think a problem, don't just look at it and say I'm fucked
- Do not spend too much time coding brute-force solutions, they should be easily-codable solutions that don't take up too much time
Time management schedule:
Offline / LAH days (4 problems - 3h):
15' thinking of solution / idea
1. no idea: skip
2. yes idea: continue thinking for <= 15'
+ implementing: <= 20'
+ brute-force: <= 5'
+ test generator: <= 5'
I hate offline because I am dumb
*/
typedef pair<int, int> ii;
const int N = 2e5+5;
const int B = 750;
const int mod = 1e9+7;
const int inf = 2e9;
using cd = complex<double>;
const long double PI = acos(-1);
int power(int a,int b) {ll x = 1;if (a >= mod) a%=mod; while (b) {if (b & 1) x = x*a % mod;a = a*a % mod;b>>=1;}return x;}
void Solve(int N)
{
if (N == 1)
{
Answer({1});
return;
} else if (N == 2)
{
Answer({1, 2});
return;
}
int n = N;
vector<int> ans;
vector<int> q(N, 1);
for (int i = 1; i <= n; i++)
{
q[i-1] = 0;
if (Query(q) == 1)
{
ans.pb(i); break;
}
q[i-1] = 1;
}
vector<int> q1(N, 0), q2(N, 0);
q1[ans[0]] = 1;
vector<int> rem;
for (int i = 1; i <= n; i++) if (i != ans[0]) rem.pb(i);
for (int i = 1; i < n; i++)
{
int l = 0, r = rem.size()-1, res;
while (l <= r)
{
int mid = l+r>>1;
for (int j = 0; j < mid; j++) q1[rem[j]] = q2[rem[j]] = 1;
int v1 = Query(q1), v2 = Query(q2);
if (v1-v2 == 1) res = mid, r = mid-1;
else l = mid+1;
}
ans.pb(rem[res]);
q1[ans.back()] = 1;
rem.erase(rem.begin()+res);
}
Answer(ans);
}
/*
Go through the mistakes you usually make and revise your code, for god's sake...
*/
signed main()
{
bruh
//freopen("input.inp","r",stdin);
//freopen("output.inp","w",stdout);
}