Submission #1218489

#	Time	Username	Problem	Language	Result	Execution time	Memory
1218489		agrim_09	Stone Arranging 2 (JOI23_ho_t1)	C++20	100 / 100	98 ms	16456 KiB

Main

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template <class T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define endl '\n';
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
#define py cout << "YES" << endl;
#define pn cout << "NO" << endl;
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define int long long
typedef long long ll;
typedef unsigned long long ull;
const ll inf = 1e18;
const ll mod = 1e9+7;


// #ifndef ONLINE_JUDGE
// #include "algo/Standard_Stuff/debug.cpp"
// #else
// #define debug(...) 42
// #endif

void judge(){
    srand(time(NULL));
    #ifndef ONLINE_JUDGE
    freopen("1.txt","r",stdin);
    freopen("2.txt","w",stdout);
    #endif
}


// Look for edge cases!!!
signed main(){
    fastio; //judge();
    int n; cin >> n;
    vector<int>a(n);
    for(auto &x : a) cin >> x;
    map<int,int>mp;
    vector<pair<int,int>>ranges;
    for(int i = 0;i<n;i++){
        if(mp.find(a[i])!=mp.end()){
            ranges.pb({mp[a[i]],i});
        }
        mp[a[i]] = i;
    }
    sort(all(ranges));
    //debug(ranges);
    int l = -1, r = -1;
    for(auto [x,y]:ranges){
        if(l<x and x<r){
            continue;
        }
        for(int i = x;i<=y;i++){
            a[i] = a[x];
        }
        l = x;
        r = y;
    }
    for(auto x : a){
        cout << x << endl;
    }
}

Compilation message (stderr)

Main.cpp: In function 'void judge()':
Main.cpp:31:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     freopen("1.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen("2.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40