oj.uz

Submission #855977

# Submission time Handle Problem Language Result Execution time Memory
855977 2023-10-02T13:18:23 Z Cyanmond Sure Bet (CEOI17_sure) C++17
60 / 100
 474 ms 4584 KB 
#include <bits/stdc++.h>

using namespace std;

#define rep(i, l, r) for (int i = (l); i < (r); ++i)
#define per(i, l, r) for (int i = (r - 1); i >= l; --i)
#define ALL(x) (x).begin(), (x).end()

using i64 = long long;

i64 parse() {
    i64 ret = 0;
    string s;
    cin >> s;
    if (find(ALL(s), '.') == s.end()) s.push_back('.');
    while (s.end() - find(ALL(s), '.') <= 4) s += '0';
    for (const auto e : s) {
        if (std::isdigit(e)) {
            ret = 10 * ret + (e - '0');
        } else {
            continue;
        }
    }
    return ret;
}

void out(i64 v) {
    cout << v / 10000 << '.';
    i64 m = v % 10000;
    string s = to_string(m);
    while (s.size() < 4) s += '0';
    cout << s;
    cout << endl;
}

void main_() {
    int N;
    cin >> N;
    vector<i64> A(N), B(N);
    rep(i, 0, N) {
        A[i] = parse();
        B[i] = parse();
        cerr << A[i] << ' ' << B[i] << endl;
    }
    sort(ALL(A), greater());
    sort(ALL(B), greater());

    i64 ok = 0, ng = 1ll << 50;
    constexpr i64 C = 10000;
    while (ng - ok > 1) {
        const auto mid = (ok + ng) / 2;
        int i = 0, j = 0;
        i64 sumA = 0, sumB = 0;
        while (true) {
            bool isOk = true;
            while (i != N and sumA - (i + j) * C < mid) {
                sumA += A[i];
                ++i;
                isOk = false;
            }
            while (j != N and sumB - (i + j) * C < mid) {
                sumB += B[j];
                ++j;
                isOk = false;
            }
            if (isOk) break;
        }
        if (min(sumA, sumB) - (i + j) * C >= mid) {
            ok = mid;
        } else {
            ng = mid;
        }
    }
    out(ok);
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    main_();
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
6 Correct 0 ms 344 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 5 ms 348 KB Output is correct
13 Correct 6 ms 612 KB Output is correct
14 Correct 5 ms 348 KB Output is correct
15 Correct 5 ms 348 KB Output is correct
16 Correct 5 ms 348 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 456 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 5 ms 348 KB Output is correct
13 Correct 6 ms 612 KB Output is correct
14 Correct 5 ms 348 KB Output is correct
15 Correct 5 ms 348 KB Output is correct
16 Correct 5 ms 348 KB Output is correct
17 Correct 457 ms 4552 KB Output is correct
18 Correct 460 ms 4400 KB Output is correct
19 Incorrect 474 ms 4584 KB Output isn't correct
20 Halted 0 ms 0 KB -