Submission #1315966

#	Time	Username	Problem	Language	Result	Execution time	Memory
1315966		wedonttalkanymore	Kamenčići (COCI21_kamencici)	C++20	0 / 70	77 ms	175440 KiB

Main

#include <bits/stdc++.h>
/*
    Checklist: 
    - Check statement: 
    - Check filename: 
    - Check test limit: 
    - Stresstest: 
*/
using namespace std;
using ll = long long;

// #define int long long
#define pii pair<ll, ll>
#define fi first
#define se second

const ll N = 350 + 5, inf = 1e9, mod = 1e9 + 7, block = 320, lim = 19;

int n, k;
string s;
int total;
int pfs[N];
int f[N][N][N];

int dp(int l, int r, int nowA) { // xet den doan [l, r], now la co bao nhieu mau do ma A da lay
    if (nowA >= k) return 0;
    if (l > r) return 1;
    if (f[l][r][nowA] != -1) return f[l][r][nowA];
    int have = total - (pfs[r] - pfs[l - 1]);
    int nowB = have - nowA; // so mau do ma B da lay
    int nowturn = (l - 1) + (n - r);
    if (nowturn % 2 == 0) { // An
        int Win = 0;
        if (nowA + (s[l] == 'C') < k) {
            if (dp(l + 1, r, nowA + (s[l] == 'C'))) Win = 1;
        }
        if (Win == 0) {
            if (nowA + (s[r] == 'C') < k) {
                if (dp(l, r - 1, nowA + (s[r] == 'C'))) Win = 1;
            }
        }
        return f[l][r][nowA] = Win;
    }
    else {
        int Lose = 0;
        if (nowB + (s[l] == 'C') < k) {
            if (!dp(l + 1, r, nowA)) {
                return f[l][r][nowA] = 0;
            }
        }
        if (nowB + (s[r] == 'C') < k) {
            if (!dp(l, r - 1, nowA)) {
                return f[l][r][nowA] = 0;
            }
        }
    }
    return f[l][r][nowA] = 1;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    if (fopen("SGAME.inp", "r")) {
        freopen("SGAME.inp", "r", stdin);
        freopen("SGAME.out", "w", stdout);
    }
    int tc = 1;
    // cin >> tc;
    while(tc-- > 0) {
        cin >> n >> k;
        cin >> s;
        s = "#" + s;
        memset(f, -1, sizeof(f));
        total = 0;
        for (int i = 1; i <= n; i++) {
            total += (s[i] == 'C');
            pfs[i] = pfs[i - 1] + (s[i] == 'P');
        }
        int ans = dp(1, n, 0);
        cout << (ans ? "DA" : "NE") << '\n';
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen("SGAME.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:65:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         freopen("SGAME.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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