Submission #1292289

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292289		thdh__	LIS (INOI20_lis)	C++20	20 / 100	4091 ms	1144 KiB

Main

#include <bits/stdc++.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--)
#define int ll

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 = 3e5+5;
const int B = 750;
const int mod = 1e9+7;
const int inf = 1e18;
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;} 

int lengthOfLIS(vector<int>& arr)
{
    int n = arr.size();
    vector<int> ans;
    ans.push_back(arr[0]);

    for (int i = 1; i < n; i++) {
        if (arr[i] > ans.back()) {
            ans.push_back(arr[i]);
        }
        else {
            int low = lower_bound(ans.begin(), ans.end(),
                                  arr[i])
                      - ans.begin();
            ans[low] = arr[i];
        }
    }
    return ans.size();
}

int q;

void solve()
{
	cin>>q;
	vector<int> a;
	while (q--) 
	{
		int i, v;
		cin>>i>>v;
		a.insert(a.begin() + (i-1), v);
		cout<<lengthOfLIS(a)<<endl;
	}
}

/*
Go through the mistakes you usually make and revise your code, for god's sake...
*/

signed main()
{
	bruh
	//freopen(".inp","r",stdin);
	//freopen(".out","w",stdout);
	int t = 1;
	// cin>>t;
	while (t--)
	{
		solve();
		cout<<"\n";
	}
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80