Submission #674710

#	Time	Username	Problem	Language	Result	Execution time	Memory
674710		rafatoa	Kamenčići (COCI21_kamencici)	C++17	70 / 70	133 ms	336032 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize ("Ofast")
 
#define F first
#define S second
#define vi vector<int>
#define vvi vector<vi>
#define pi pair<int, int>
#define vpi vector<pi>
#define vb vector<bool>
#define vvb vector<vb>
#define pb push_back
#define ppb pop_back
#define read(a) for(auto &x:a) cin >> x;
#define print(a) for(auto x:a) cout << x << " "; cout << "\n";
#define vc vector<char>
#define vvc vector<vc>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

#define int long long
#define ld long double
const int INF = 4e18;

int n, k;
string s;
vi pref;

const int N = 350;
int dp[N][N][N];

bool win(int l, int r, int cnt){
    if(cnt >= k) return dp[l][r][cnt] = 0;
    int h = pref[n]-(pref[r+1]-pref[l])-cnt;
    if(h >= k) return dp[l][r][cnt] = 1;

    if(dp[l+1][r][h] == -1)
         dp[l+1][r][h] = win(l+1, r, h);
    if(!dp[l+1][r][h]) return 1;
    if(dp[l][r-1][h] == -1)
         dp[l][r-1][h] = win(l, r-1, h);
    if(!dp[l][r-1][h]) return 1;
    return 0;
}

void solve(){
    cin >> n >> k >> s;
    pref = vi(n+1);

    for(int i=0; i<N; i++)
    for(int j=0; j<N; j++)
    for(int k=0; k<N; k++)
        dp[i][j][k] = -1;

    for(int i=0; i<n; i++)
        pref[i+1] = pref[i]+(s[i] == 'C' ? 1 : 0);

    cout << (win(0, n-1, 0) ? "DA\n" : "NE\n");
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    // #ifndef ONLINE_JUDGE
    //     freopen("in.txt", "r", stdin);
    //     freopen("out.txt", "w", stdout);
    // #endif

    int tt = 1;
    // cin >> tt;
    while(tt--)
        solve();
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'bool win(long long int, long long int, long long int)':
Main.cpp:34:39: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   34 |     if(cnt >= k) return dp[l][r][cnt] = 0;
      |                         ~~~~~~~~~~~~~~^~~
Main.cpp:36:37: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   36 |     if(h >= k) return dp[l][r][cnt] = 1;
      |                       ~~~~~~~~~~~~~~^~~

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