Submission #866884

#	Time	Username	Problem	Language	Result	Execution time	Memory
866884		3as8	Kamenčići (COCI21_kamencici)	C++14	10 / 70	1085 ms	348 KiB

Main

#include <bits/stdc++.h>

#define ll long long
#define endl "\n"
#define fastIO cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false);

#define mid ((l + r) / 2)
#define lChild ((index * 2) + 1)
#define rChild ((index * 2) + 2)

using namespace std;

struct node {
    ll t, a, b;
};


bool get(string& s, ll l, ll r, ll k, vector<ll>& score, bool round) {

   /* cout<<round + 1<< " => "<<l<<" "<<r<<endl;
    cout<<"Score: "<<score[0]<<" "<<score[1]<<endl;*/

    if(score[0] == k) return false;
    else if(score[1] == k) return true;

    bool ans = round;
    score[round] += s[l] == 'C';
    if(!round) ans |= get(s, l + 1, r, k, score, !round);
    else ans &= get(s, l + 1, r, k, score, !round);
    score[round] -= s[l] == 'C';


    score[round] += s[r] == 'C';
    if(!round) ans |= get(s, l, r - 1, k, score, !round);
    else ans &= get(s, l, r - 1, k, score, !round);
    score[round] -= s[r] == 'C';

    return ans;
}

void solve(ll _) {

    ll n, k; cin>>n>>k;

    string s; cin>>s;

    vector<ll> scores = {0, 0};
    cout<<(get(s, 0, n - 1, k, scores, 0) ? "DA" : "NE")<<endl;

}

int main() {
    fastIO

    //freopen("file.in", "r", stdin);
    //freopen("file.out", "w", stdout);

    ll t = 0;  solve(t);
}

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