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Submission #757324

# Submission time Handle Problem Language Result Execution time Memory
757324 2023-06-13T05:20:10 Z The_Samurai Brunhilda’s Birthday (BOI13_brunhilda) C++17
50.9524 / 100
 1000 ms 79308 KB 
#include "bits/stdc++.h"

using namespace std;

bool isPrime(int n) {
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            return false;
        }
    }
    return n > 1;
}

int INF = 1e9;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    clock_t startTime = clock();
//    int N = 1e4;
//    vector<int> g(N + 1);
//    vector<int> dp(N + 1, (int)1e9);
//    primes = {5, 11, 19};
//    dp[0] = 0;
//    for (int i = 1; i <= N; i++) {
//        for (int p: primes) {
//            dp[i] = min(dp[i], dp[i - i % p] + 1);
//        }
//    }
//    for (int i = 1; i <= 100; i++) {
//        cout << i << " -> " << dp[i] << endl;
//    }
    int n, q, N = 1e7;
    cin >> n >> q;
    vector<int> primes(n), g(N + 1), dp(N + 1, INF);
    iota(g.begin(), g.end(), 0);
    for (int &p: primes) {
        cin >> p;
    }
    reverse(primes.begin(), primes.end());
    for (int i = 0; i < n; i++) {
        int p = primes[i];
        for (int j = 0; j <= N; j += p) {
            for (int k = min(N, j + p - 1); k > j and j < g[k]; k--) {
                g[k] = j;
            }
        }
    }
    dp[0] = 0;
    for (int i = 1; i <= N; i++) {
        dp[i] = dp[g[i]] + 1;
    }
    while (q--) {
        int x;
        cin >> x;
        if (dp[x] >= INF) {
            cout << "oo\n";
        } else {
            cout << dp[x] << '\n';
        }
    }

#ifdef sunnitov
    cerr << "\nTime: " << (int)((double)(clock() - startTime) / CLOCKS_PER_SEC * 1000);
#endif
}

Compilation message

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:18:13: warning: unused variable 'startTime' [-Wunused-variable]
   18 |     clock_t startTime = clock();
      |             ^~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 78608 KB Output is correct
2 Correct 124 ms 78596 KB Output is correct
3 Correct 86 ms 78588 KB Output is correct
4 Correct 76 ms 78640 KB Output is correct
5 Correct 108 ms 78660 KB Output is correct
6 Correct 66 ms 78548 KB Output is correct
7 Correct 72 ms 78540 KB Output is correct
8 Correct 80 ms 78596 KB Output is correct
9 Correct 93 ms 78480 KB Output is correct
10 Correct 133 ms 78568 KB Output is correct
11 Correct 125 ms 78608 KB Output is correct
12 Correct 85 ms 78620 KB Output is correct
13 Correct 217 ms 78608 KB Output is correct
14 Correct 228 ms 78544 KB Output is correct
15 Correct 118 ms 78588 KB Output is correct
16 Correct 130 ms 78540 KB Output is correct
17 Correct 108 ms 78652 KB Output is correct
18 Correct 73 ms 78620 KB Output is correct

Subtask #2
6.66666666667 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1074 ms 78704 KB Time limit exceeded
2 Execution timed out 1068 ms 79032 KB Time limit exceeded
3 Execution timed out 1077 ms 78960 KB Time limit exceeded
4 Correct 478 ms 78620 KB Output is correct
5 Execution timed out 1070 ms 79052 KB Time limit exceeded
6 Correct 168 ms 78488 KB Output is correct
7 Execution timed out 1088 ms 78728 KB Time limit exceeded
8 Correct 165 ms 78608 KB Output is correct
9 Execution timed out 1089 ms 79120 KB Time limit exceeded
10 Execution timed out 1072 ms 78924 KB Time limit exceeded
11 Execution timed out 1070 ms 78840 KB Time limit exceeded
12 Correct 269 ms 78540 KB Output is correct
13 Execution timed out 1055 ms 78632 KB Time limit exceeded
14 Correct 476 ms 78568 KB Output is correct
15 Execution timed out 1083 ms 78828 KB Time limit exceeded
16 Execution timed out 1054 ms 79052 KB Time limit exceeded
17 Correct 228 ms 78624 KB Output is correct
18 Execution timed out 1090 ms 79104 KB Time limit exceeded

Subtask #3
24.2857142857 / 60.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1053 ms 78796 KB Time limit exceeded
2 Execution timed out 1075 ms 78924 KB Time limit exceeded
3 Execution timed out 1077 ms 78856 KB Time limit exceeded
4 Correct 460 ms 79032 KB Output is correct
5 Execution timed out 1046 ms 79180 KB Time limit exceeded
6 Execution timed out 1085 ms 78688 KB Time limit exceeded
7 Execution timed out 1058 ms 79044 KB Time limit exceeded
8 Execution timed out 1081 ms 78796 KB Time limit exceeded
9 Execution timed out 1082 ms 78904 KB Time limit exceeded
10 Correct 805 ms 78728 KB Output is correct
11 Correct 548 ms 78832 KB Output is correct
12 Correct 733 ms 78712 KB Output is correct
13 Execution timed out 1064 ms 78784 KB Time limit exceeded
14 Correct 173 ms 79284 KB Output is correct
15 Correct 787 ms 78792 KB Output is correct
16 Correct 808 ms 78748 KB Output is correct
17 Execution timed out 1076 ms 78820 KB Time limit exceeded
18 Execution timed out 1079 ms 78880 KB Time limit exceeded
19 Execution timed out 1072 ms 78616 KB Time limit exceeded
20 Execution timed out 1081 ms 78800 KB Time limit exceeded
21 Correct 171 ms 79308 KB Output is correct
22 Execution timed out 1091 ms 78972 KB Time limit exceeded
23 Execution timed out 1081 ms 78652 KB Time limit exceeded
24 Correct 197 ms 78788 KB Output is correct
25 Correct 346 ms 78860 KB Output is correct
26 Correct 511 ms 78856 KB Output is correct
27 Execution timed out 1087 ms 78932 KB Time limit exceeded
28 Correct 123 ms 78796 KB Output is correct
29 Execution timed out 1079 ms 78932 KB Time limit exceeded
30 Execution timed out 1069 ms 78748 KB Time limit exceeded
31 Execution timed out 1067 ms 78868 KB Time limit exceeded
32 Correct 345 ms 78856 KB Output is correct
33 Correct 300 ms 78724 KB Output is correct
34 Execution timed out 1055 ms 78952 KB Time limit exceeded
35 Correct 199 ms 78856 KB Output is correct
36 Execution timed out 1046 ms 78820 KB Time limit exceeded
37 Execution timed out 1084 ms 79052 KB Time limit exceeded
38 Execution timed out 1080 ms 78540 KB Time limit exceeded
39 Correct 349 ms 78864 KB Output is correct
40 Execution timed out 1084 ms 78584 KB Time limit exceeded
41 Execution timed out 1083 ms 79052 KB Time limit exceeded
42 Correct 295 ms 78980 KB Output is correct