Submission #1292291

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292291		BuiDucManh123	LIS (INOI20_lis)	C++20	20 / 100	4086 ms	916 KiB

Main

#include <bits/stdc++.h>
#define fi first
#define se second
#define ll long long
#define pii pair<int, int>
#define pb push_back
#define taskname ""
const int mod = 1e9+7;
using namespace std;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

int lis(vector<int>& arr){
    int n = arr.size();
    vector<int> ans;
    ans.pb(arr[0]);
    for(int i = 1; i < n; i++){
        if (arr[i] > ans.back()){
            ans.pb(arr[i]);
        }
        else{
            int low = lower_bound(ans.begin(), ans.end(), arr[i]) - ans.begin();
            ans[low] = arr[i];
        }
    }
    return ans.size();
}

void solve(){
    int q;
	cin >> q;
	vector<int> a;
	while(q--){
		int x, v;
		cin >> x >> v;
		a.insert(a.begin() + x - 1, v);
		cout << lis(a) << "\n";
	}
}
signed main() {
    if (fopen(taskname".inp","r")) {
        freopen(taskname".inp","r",stdin);
        freopen(taskname".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int test = 1;
    //cin >> test;
    while(test--){
        solve();
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen(taskname".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen(taskname".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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