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Submission #717355

# Submission time Handle Problem Language Result Execution time Memory
717355 2023-04-01T21:27:03 Z TheSahib Kamenčići (COCI21_kamencici) C++17
70 / 70
 75 ms 169568 KB 
#include <bits/stdc++.h>

#define ll long long
#define oo 1e9
#define pii pair<int, int>

using namespace std;

const int MAX = 351;

int n, k; 
string s;

int reds[MAX];
int dp[MAX][MAX][MAX];

bool f(int l, int r, int red){
    if(dp[l][r][red] != -1) return dp[l][r][red];
    if(red >= k) return 0;
    int red1 = reds[n] - (reds[r] - reds[l - 1]) - red;
    if(red1 >= k) return 1;
    if(l == r) return 0;


    if(f(l + 2, r, red + (s[l] == 'C')) && f(l + 1, r - 1, red + (s[l] == 'C'))) return dp[l][r][red] = 1;

    if(f(l, r - 2, red + (s[r] == 'C')) && f(l + 1, r - 1, red + (s[r] == 'C'))) return dp[l][r][red] = 1;

    return dp[l][r][red] = 0;
}

void solve(){
    memset(dp, -1, sizeof(dp));
    cin >> n >> k;
    cin >> s;
    s.insert(s.begin(), ' ');

    for (int i = 1; i <= n; i++)
    {
        reds[i] = reds[i - 1] + (s[i] == 'C');
    }

    if(f(1, n, 0)){
        cout << "DA\n";
    }
    else{
        cout << "NE\n";
    }
}

int main()
{
    solve();
}

Compilation message

Main.cpp: In function 'bool f(int, int, int)':
Main.cpp:25:103: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   25 |     if(f(l + 2, r, red + (s[l] == 'C')) && f(l + 1, r - 1, red + (s[l] == 'C'))) return dp[l][r][red] = 1;
      |                                                                                         ~~~~~~~~~~~~~~^~~
Main.cpp:27:103: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   27 |     if(f(l, r - 2, red + (s[r] == 'C')) && f(l + 1, r - 1, red + (s[r] == 'C'))) return dp[l][r][red] = 1;
      |                                                                                         ~~~~~~~~~~~~~~^~~
Main.cpp:29:26: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   29 |     return dp[l][r][red] = 0;
      |            ~~~~~~~~~~~~~~^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 169468 KB Output is correct
2 Correct 62 ms 169540 KB Output is correct
3 Correct 65 ms 169460 KB Output is correct
4 Correct 74 ms 169568 KB Output is correct
5 Correct 70 ms 169480 KB Output is correct
6 Correct 68 ms 169464 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 169468 KB Output is correct
2 Correct 62 ms 169540 KB Output is correct
3 Correct 65 ms 169460 KB Output is correct
4 Correct 74 ms 169568 KB Output is correct
5 Correct 70 ms 169480 KB Output is correct
6 Correct 68 ms 169464 KB Output is correct
7 Correct 71 ms 169488 KB Output is correct
8 Correct 68 ms 169420 KB Output is correct
9 Correct 75 ms 169560 KB Output is correct
10 Correct 69 ms 169420 KB Output is correct
11 Correct 64 ms 169504 KB Output is correct
12 Correct 62 ms 169512 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 169468 KB Output is correct
2 Correct 62 ms 169540 KB Output is correct
3 Correct 65 ms 169460 KB Output is correct
4 Correct 74 ms 169568 KB Output is correct
5 Correct 70 ms 169480 KB Output is correct
6 Correct 68 ms 169464 KB Output is correct
7 Correct 71 ms 169488 KB Output is correct
8 Correct 68 ms 169420 KB Output is correct
9 Correct 75 ms 169560 KB Output is correct
10 Correct 69 ms 169420 KB Output is correct
11 Correct 64 ms 169504 KB Output is correct
12 Correct 62 ms 169512 KB Output is correct
13 Correct 64 ms 169460 KB Output is correct
14 Correct 67 ms 169540 KB Output is correct
15 Correct 70 ms 169564 KB Output is correct
16 Correct 66 ms 169508 KB Output is correct
17 Correct 68 ms 169444 KB Output is correct
18 Correct 67 ms 169544 KB Output is correct