Submission #728569

#	Time	Username	Problem	Language	Result	Execution time	Memory
728569		aykhn	Kamenčići (COCI21_kamencici)	C++14	70 / 70	197 ms	179968 KiB

Main

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

#define OPT ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define pii pair<int,int>
#define pll pair<ll,ll>
#define endl "\n"
#define all(v) v.begin(),v.end()
#define mpr make_pair
#define pb push_back
#define ts to_string
#define inf 0x3F3F3F3F
#define bpc __builtin_popcount

int k;
string s;

bool player2(int l, int r, int cnt1, int cnt2);

vector<vector<vector<short>>> dp1(351, vector<vector<short>> (351, vector<short> (351, -1)));
vector<vector<vector<short>>> dp2(351, vector<vector<short>> (351, vector<short> (351, -1)));

bool player1(int l, int r, int cnt1, int cnt2)// a || b || c
{
    if (cnt2 == k) return true;
    if (dp1[l][r][cnt2] != -1) return dp1[l][r][cnt2];
    
    bool a, b;
    a = b = false;
    
    if (s[l] == 'C') a = player2(l + 1, r, cnt1 + 1, cnt2);
    else a = player2(l + 1, r, cnt1, cnt2);
    if (s[r] == 'C') b = player2(l, r - 1, cnt1 + 1, cnt2);
    else b = player2(l, r - 1, cnt1, cnt2);
    
    return dp1[l][r][cnt2] = (a || b);
}

bool player2(int l, int r, int cnt1, int cnt2)// a && b && c
{
    if (cnt1 == k) return false;
    if (dp2[l][r][cnt1] != -1) return dp2[l][r][cnt1];
    
    bool a, b;
    a = b = false;
    
    if (s[l] == 'C') a = player1(l + 1, r, cnt1, cnt2 + 1);
    else a = player1(l + 1, r, cnt1, cnt2);
    if (s[r] == 'C') b = player1(l, r - 1, cnt1, cnt2 + 1);
    else b = player1(l, r - 1, cnt1, cnt2);
    
    return dp2[l][r][cnt1] = (a && b);
}


int main()
{
	int n;
    cin >> n >> k;
    cin >> s;
    
    cout << (player1(0, n - 1, 0, 0) ? "DA" : "NE") << endl;
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'bool player1(int, int, int, int)':
Main.cpp:39:28: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   39 |     return dp1[l][r][cnt2] = (a || b);
Main.cpp: In function 'bool player2(int, int, int, int)':
Main.cpp:55:28: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   55 |     return dp2[l][r][cnt1] = (a && b);

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