Submission #1238226

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238226		wetsponge	Kamenčići (COCI21_kamencici)	C++20	30 / 70	159 ms	338932 KiB

Main

#include <bits/stdc++.h>
#define endl "\n"
#define mod 1000000007
using namespace std;
int dp[351][351][351][2];
string s;
int n,k;
bool solve(int l,int r,int a,int b,int u){
    if(a>k||b>k) return 1;
    if(dp[l][r][a][u]!=-1) return dp[l][r][a][u];
    if(u==0){
        if(solve(l+1,r,a+(s[l]=='C'),b,u^1)==0||solve(l,r-1,a+(s[r]=='C'),b,u^1)==0) return dp[l][r][a][u]=1;
        return dp[l][r][a][u]=0;
    }
    else{
        if(solve(l+1,r,a,b+(s[l]=='C'),u^1)==0||solve(l,r-1,a,b+(s[r]=='C'),u^1)==0) return dp[l][r][a][u]=1;
        return dp[l][r][a][u]=0;
    }
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    memset(dp,-1,sizeof dp);
    cin>>n>>k>>s;
    if(solve(0,n-1,0,0,0)==1) cout<<"DA"<<endl;
    else cout<<"NE"<<endl;
}

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