Submission #494193

#	Time	Username	Problem	Language	Result	Execution time	Memory
494193		ktkerem	Kamenčići (COCI21_kamencici)	C++17	30 / 70	1 ms	336 KiB

Main

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
ll _i=0;
#define ffn(x) _i=x
#define llll pair<ll , ll>
#define stitr set<llll>::iterator
#define fora(y,x) for(ll y=_i;x>y;y++)
#define pb push_back
#define pf push_front
#define debu cout << "hello\n"
#define fi first
#define sec second
#define all(a) a.begin() , a.end()
const ll limit = 1e13 + 7; 
const ll ous=1e6 + 5;
const ll dx[4] = {1 , -1 , 0 , 0} , dy[4] = {0,0,-1,1};
void solve(){
    ll n , k;cin >> n >> k;
    string h;cin >> h;
    ll turn = 0;
    ll l = 0 , r = n-1;
    ll play[2];
    play[0] = play[1] = 0;
    ll dl[n] , dr[n];
    memset(dl , 0 , sizeof(dl));
    memset(dr , 0 , sizeof(dr));
    dl[0] = limit;
    dr[n-1] = limit;
    for(ll i = 0;n>i;i++){
        if(h[i] == 'P'){
            dl[i] = 0;
        }
        else if(i != 0){
            dl[i] = dl[i-1]+1;
        }
    }
    for(ll i = n-1;0<=i;i--){
        if(h[i] == 'P'){
            dr[i] = 0;
        }
        else if(i != n-1){
            dr[i] = dr[i+1] + 1;
        }
    }
    for(ll i = 0;n>i;i++)
    while(r >= l){
        if(play[1] >= k){
            cout << "DA\n";
            return;
        }
        else if(play[0] >= k){
            cout << "NE\n";
            return;
        }
        if(h[r] == 'C' && h[l] == 'C'){
            if(play[turn%2] >= play[(turn+1)%2]){
                play[turn%2]++;
                if(dr[r] > dl[l]){
                    l++;
                }
                else{
                    r--;
                }
            }
            else{
                play[turn%2]++;
                if(dr[r] > dl[l]){
                    r--;
                }
                else{
                    l++;
                }   
            }
        }
        else{
            if(h[l] == 'P'){
                l++;
            }
            else{
                r--;
            }
        }
        turn++;
    }
    return;
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    ll t=1;
    //cin >> t;
    while(t--){
        solve();
    }
    return 0; 
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 40