제출 #1184265

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1184265		al95ireyiz	Kamenčići (COCI21_kamencici)	C++20	0 / 70	0 ms	580 KiB

Main

//*** Bismillah ***//
// It's the evening of another day. And the end of mine...
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#if !defined(ONLINE_JUDGE) and !defined(EVAL)
#include "template/debug.h"
#else
#define d(x...)
#endif
#define ll long long
const ll INF = 1e9;
const ll INFL = 1e18;
const ll MOD = 1e9 + 7;
const ll maxn = 350 + 5;
ll n,m,k=0;
bool dp[maxn][maxn][maxn], vis[maxn][maxn][2];
ll a[maxn], ps[maxn];
ll f(ll l, ll r, ll c){
    if(vis[l][r][c]) return dp[l][r][c];
    vis[l][r][c] = 1;
    ll ot = ps[l-1] + (ps[n] - ps[r]) - c;
    if(c >= m) return dp[l][r][c] = 0;
    if(ot >= m) return dp[l][r][c] = 1;
    ll l1 = f(l+1, r, ot);
    ll l2 = f(l, r-1, ot);
    return dp[l][r][c] = (!l1 or !l2);
}
void _(){
    cin>>n>>m;
    char c;
    for(ll i=1;i<=n;i++) cin>>c, a[i] = (c == 'C'), ps[i] = ps[i-1] + a[i];
    if(f(1, n, 0)) cout<<"DA\n";
    else cout<<"NE\n";
}
signed main(){
    auto testcaseruntime=clock();
    cin.tie(0)->sync_with_stdio(0);
    ll t=1;
    // cin>>t;
    while(t--){
        _();
    }
    cerr<<"\n\033[1;31mTime: \033[1;30m"
        <<(double)(clock()-testcaseruntime)/1000000<<"\033[1;32m seconds\n";
}

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