oj.uz

Submission #580052

# Submission time Handle Problem Language Result Execution time Memory
580052 2022-06-20T14:12:29 Z Josia Boarding Passes (BOI22_passes) C++17
5 / 100
 3 ms 1680 KB 
#include <bits/stdc++.h>

using namespace std;

#define int int64_t

signed main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    string s; cin >> s;

    int n = s.size();

    cerr << n << "\n";

    vector<vector<int>> groups(26);

    for (int i = 0; i<n; i++) {
        groups[s[i]-'A'].push_back(i);
    }

    assert(n==groups[s[0]-'A'].size());

    int n1 = (n/2);
    int n2 = ((n+1)/2);

    long double res = (n1-1)*n1 + (n2-1)*n2;

    res /= 4;

    cout << setprecision(30) << res << "\n";

    return 0;
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from passes.cpp:1:
passes.cpp: In function 'int main()':
passes.cpp:23:13: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     assert(n==groups[s[0]-'A'].size());
      |            ~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 2 ms 1580 KB Output is correct
7 Correct 2 ms 1680 KB Output is correct
8 Correct 2 ms 1680 KB Output is correct
9 Correct 3 ms 1680 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 2 ms 1580 KB Output is correct
7 Correct 2 ms 1680 KB Output is correct
8 Correct 2 ms 1680 KB Output is correct
9 Correct 3 ms 1680 KB Output is correct
10 Runtime error 1 ms 468 KB Execution killed with signal 6
11 Halted 0 ms 0 KB -