oj.uz

답안 #127717

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
127717 2019-07-10T03:14:32 Z BThero Asceticism (JOI18_asceticism) C++17
4 / 100
 600 ms 384 KB 
// Why am I so dumb? :c
// chrono::system_clock::now().time_since_epoch().count()

//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>

#define pb push_back
#define mp make_pair

#define all(x) (x).begin(), (x).end()

#define fi first
#define se second

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;   
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

int perm[15];

int n, k;

void solve() {
    scanf("%d %d", &n, &k);

    for (int i = 1; i <= n; ++i) {
        perm[i] = i;
    }

    int ans = 0;

    do {
        int a = 1, b = 0;

        for (int i = 1; i <= n; ++i) {
            if (perm[i] < b) {
                ++a;
            }
            
            b = perm[i];
        }

        if (a == k) {
            ++ans;
        }
    }
    while (next_permutation(perm + 1, perm + n + 1));

    printf("%d\n", ans);
}

int main() {
    int tt = 1;

    while (tt--) {
        solve();
    }

    return 0;
}

Compilation message

asceticism.cpp: In function 'void solve()':
asceticism.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 67 ms 376 KB Output is correct
3 Correct 67 ms 356 KB Output is correct
4 Correct 67 ms 256 KB Output is correct
5 Correct 66 ms 256 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 8 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 67 ms 376 KB Output is correct
3 Correct 67 ms 356 KB Output is correct
4 Correct 67 ms 256 KB Output is correct
5 Correct 66 ms 256 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 8 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Execution timed out 1079 ms 256 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 67 ms 376 KB Output is correct
3 Correct 67 ms 356 KB Output is correct
4 Correct 67 ms 256 KB Output is correct
5 Correct 66 ms 256 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 8 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Execution timed out 1079 ms 256 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 67 ms 376 KB Output is correct
3 Correct 67 ms 356 KB Output is correct
4 Correct 67 ms 256 KB Output is correct
5 Correct 66 ms 256 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 8 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Execution timed out 1079 ms 256 KB Time limit exceeded
12 Halted 0 ms 0 KB -