Submission #470053

#	Time	Username	Problem	Language	Result	Execution time	Memory
470053		MohamedAliSaidane	Cake (CEOI14_cake)	C++14	0 / 100	2083 ms	16408 KiB

cake

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef tuple<int,int,int> ti;
typedef unsigned long long ull;
typedef long double ld;
typedef vector<ll> vll;
typedef pair<ld,ld> pld;
#define pb push_back
#define popb pop_back()
#define pf push_front
#define popf pop_front
#define ff first
#define ss second
#define MOD (int)(1e8)
#define INF (ll) (1e18)
#define all(v) (v).begin(),(v).end()
ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;}
ll lcm(ll a , ll b) {return (a * b) / gcd(a , b);}
ld pointdist(ld x, ld y, ld point) { return ((x-point)*(y-point))/abs(x-y); }
//ld dist(ld x, ld y, ld a, ld b){ return sqrt((x-a)*(x-a) + (y-b)*(y-b)); }
const int nx[8] = {0, 0, 1, -1,1,1,-1,-1}, ny[8] = {1, -1, 0, 0,1,-1,1,-1}; //East, West, South, North+
////////////******SOLUTION******\\\\\\\\\\\

const int MAX_N = 1e5 + 4;
int n;
vi A;
int a;
map<int,int> m;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    cin >> n >> a;
    A.assign(n+2,0);
    A[0] = MOD;
    A[n+1] = MOD+1;
    for(int i = 1; i <=n;  i ++)
        cin >> A[i];
    m[a] = 0;
    int l = a -1;
    int r = a +1;
    int h = 1;
    while(l != 0 || r != n + 1)
    {
        if(A[l] < A[r])
        {
            m[l] = h;
            l --;
        }
        else
        {
            m[r] = h;
            r ++ ;
        }
        h ++;
    }
    int q; cin >> q;
    while(q--)
    {
        char query; cin >> query;
        if(query == 'F')
        {
            int idx; cin >> idx;
            cout << m[idx] << '\n';
        }
        else
        {
            int idx; cin >> idx;
            int e; cin >> e;
            int rang = n - A[idx] + 1;
            A[idx] = n-e + 1;
            for(int i = 1; i <= n; i ++)
            {
                if(i == idx)
                    continue;
                int rnk = n - A[i] + 1;
                if(rnk <= e && rnk >  rang)
                {
                    A[i]--;
                }
            }
            l = a -1;
            r = a +1;
            h = 1;
            while(l != 0 || r != n + 1)
            {
                if(A[l] < A[r])
                {
                    m[l] = h;
                    l --;
                }
                else
                {
                    m[r] = h;
                    r ++ ;
                }
                h ++;
            }
        }
    }
}
/*
Identify problem diagram: Brute force, Greedy, Dynamic Programming, Divide and Conquer
Reformulate the problem into something more theoretical
!!!!! IMPLICIT GRAPH ??????
!!!!! PAY ATTENTION TO THE CONSTRAINTS: DP nD ? BF ? BITMASKING ?
!!!!! SOLVE THE SUBTASKS FIRST: IT'S TOTALLY OK NOT TO SOLVE THE PROBLEM ENTIRELY
Search for multiple approaches: select the seemingly optimal one
Remember that you're the king of CP
Change your approach
Imagine Corner cases before submitting
Don't spend too much time on the problem: move on !
*/

Compilation message (stderr)

cake.cpp:26:1: warning: multi-line comment [-Wcomment]
   26 | ////////////******SOLUTION******\\\\\\\\\\\
      | ^

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50