oj.uz

Submission #1041568

# Submission time Handle Problem Language Result Execution time Memory
1041568 2024-08-02T05:52:15 Z vjudge1 Ljetopica (COI19_ljetopica) C++17
22 / 100
 500 ms 504 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 1000000007
ll  n ,k , c1 = 0, c2 = 0;
string s;
ll ch(ll u , ll rem , ll c , ll curr){
    if(rem < 0 or (u == n - 1 and (rem > 0 or c < c1 or c > c2))){
        return 0;
    }
    if(u == n - 1){
        return c;
    }
    if(curr){
        if(s[u] == 'L'){
            return (ch(u + 1, rem - 1, c * 2 + 1, 1 - curr) + ch(u + 1, rem, c * 2 + 1, curr)) % MOD;
        }
        else{
            return (ch(u + 1, rem - 1, c * 2, 1 - curr) + ch(u + 1, rem, c * 2, curr)) % MOD;
        }
    }
    else{
        if(s[u] == 'R'){
            return (ch(u + 1, rem - 1, c * 2 + 1, 1 - curr) + ch(u + 1, rem, c * 2 + 1, curr)) % MOD;
        }
        else{
            return (ch(u + 1, rem - 1, c * 2, 1 - curr) + ch(u + 1, rem, c * 2, curr)) % MOD;
        }
    }

}
void solve(){
    cin >> n >> k;
    string a  , b;
    cin >> s >> a >> b;
    for(int i = 0 ;i < a.length(); i ++){
        c1 = ((c1 * 2) + (a[i] - '0')) % MOD;
        c2 = ((c2 * 2) + (b[i] - '0')) % MOD;
    }
    if(k == 0){
        if(c1 == c2){
            c1 = 0 ;
        }
        cout << (c1 + c2) % MOD << '\n';
    }
    else{
        cout << (ch(0 , k, 1 ,0) + ch(0 , k, 1 ,1)) % MOD << '\n';
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int tests = 1;
    // cin >> tests;
    for (int i = 1; i <= tests; i++){
        solve();
    }
    return 0;
}

Compilation message

ljetopica.cpp: In function 'void solve()':
ljetopica.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0 ;i < a.length(); i ++){
      |                    ~~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 504 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 344 KB Output is correct
2 Correct 10 ms 348 KB Output is correct
3 Correct 209 ms 424 KB Output is correct
4 Correct 258 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 33 ms 348 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 255 ms 432 KB Output is correct
9 Correct 14 ms 344 KB Output is correct
10 Correct 1 ms 448 KB Output is correct
11 Correct 15 ms 456 KB Output is correct
12 Correct 10 ms 452 KB Output is correct
13 Correct 226 ms 344 KB Output is correct
14 Correct 27 ms 456 KB Output is correct
15 Correct 73 ms 348 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1100 ms 344 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 504 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 38 ms 344 KB Output is correct
10 Correct 10 ms 348 KB Output is correct
11 Correct 209 ms 424 KB Output is correct
12 Correct 258 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 33 ms 348 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 255 ms 432 KB Output is correct
17 Correct 14 ms 344 KB Output is correct
18 Correct 1 ms 448 KB Output is correct
19 Correct 15 ms 456 KB Output is correct
20 Correct 10 ms 452 KB Output is correct
21 Correct 226 ms 344 KB Output is correct
22 Correct 27 ms 456 KB Output is correct
23 Correct 73 ms 348 KB Output is correct
24 Execution timed out 1100 ms 344 KB Time limit exceeded
25 Halted 0 ms 0 KB -