oj.uz

Submission #93406

# Submission time Handle Problem Language Result Execution time Memory
93406 2019-01-08T09:58:43 Z inom Marriage questions (IZhO14_marriage) C++14
32 / 100
 1500 ms 3960 KB 
#include<bits/stdc++.h>
#include<ext/pb_ds/tree_policy.hpp>
#include<ext/pb_ds/assoc_container.hpp>

#define fi first
#define se second
#define new new228
#define pb push_back
#define rank rank228
#define int long long
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
 
using namespace std;
using namespace __gnu_pbds;
 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx,tune=native")
#pragma GCC optimize("fast-math")
#pragma warning(disable : 4996)
 
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; // st.oreder_of_key();

const int N = 30030;
const int INF = 1e15 + 7;
const int MAXN = 100100;
const int MOD = 998244353;
 
int TN = 1;

int n, m, k;
int us[N], cnt, ans;
bool flag = false;
vector<int> verr[N];

void rec(int a, int b, int cnt) {
    if (a > b) {
        if (cnt >= m) {
            flag = true; return;
        } else {
            return;
        }
    }
    if (cnt >= m) {
        flag = true; return;
    }
    for (auto i: verr[a]) {
        if (!us[i]) {
            us[i] = 1;
            rec(a + 1, b, cnt + 1);
            us[i] = 0;
        }
    }
    rec(a + 1, b, cnt);
}

void solve() {
    scanf("%lld %lld %lld", &n, &m, &k);
    for (int i = 1; i <= k; i++) {
        int x, y; 
        scanf("%lld %lld", &x, &y); verr[x].push_back(y);
    }
    for (int l = 1; l <= n; l++) {
        for (int r = l + m - 1; r <= n; r++) {
            fill(us, us + N, 0); flag = false; cnt = 0;
            rec(l, r, cnt); ans += flag;
        }
    }
    printf("%lld\n", ans);
    return;
}

signed main() {
    // in; out; // cin >> TN;
    while (TN--) { solve(); }
    return 0;
}

Compilation message

marriage.cpp:23:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable : 4996)
 
marriage.cpp: In function 'void solve()':
marriage.cpp:61:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld %lld", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
marriage.cpp:64:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld %lld", &x, &y); verr[x].push_back(y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
32.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1276 KB Output is correct
2 Correct 3 ms 1272 KB Output is correct
3 Correct 2 ms 1272 KB Output is correct
4 Correct 2 ms 1272 KB Output is correct
5 Correct 3 ms 1272 KB Output is correct
6 Correct 2 ms 1272 KB Output is correct
7 Execution timed out 1556 ms 1272 KB Time limit exceeded
8 Correct 2 ms 1272 KB Output is correct
9 Correct 3 ms 1272 KB Output is correct
10 Correct 2 ms 1016 KB Output is correct
11 Correct 2 ms 1272 KB Output is correct
12 Correct 2 ms 1272 KB Output is correct
13 Correct 3 ms 1272 KB Output is correct
14 Execution timed out 1571 ms 1272 KB Time limit exceeded
15 Correct 708 ms 1296 KB Output is correct
16 Correct 8 ms 1272 KB Output is correct
17 Correct 249 ms 1292 KB Output is correct
18 Correct 46 ms 1272 KB Output is correct
19 Execution timed out 1566 ms 1272 KB Time limit exceeded
20 Execution timed out 1575 ms 1272 KB Time limit exceeded
21 Execution timed out 1573 ms 1272 KB Time limit exceeded
22 Execution timed out 1569 ms 1272 KB Time limit exceeded
23 Execution timed out 1577 ms 1272 KB Time limit exceeded
24 Execution timed out 1552 ms 1272 KB Time limit exceeded
25 Execution timed out 1575 ms 1528 KB Time limit exceeded
26 Execution timed out 1570 ms 1244 KB Time limit exceeded
27 Execution timed out 1560 ms 1272 KB Time limit exceeded
28 Execution timed out 1565 ms 1272 KB Time limit exceeded
29 Execution timed out 1580 ms 1400 KB Time limit exceeded
30 Execution timed out 1557 ms 1400 KB Time limit exceeded
31 Execution timed out 1571 ms 2296 KB Time limit exceeded
32 Execution timed out 1572 ms 1528 KB Time limit exceeded
33 Execution timed out 1567 ms 1272 KB Time limit exceeded
34 Execution timed out 1570 ms 1272 KB Time limit exceeded
35 Execution timed out 1571 ms 3068 KB Time limit exceeded
36 Execution timed out 1564 ms 2936 KB Time limit exceeded
37 Execution timed out 1558 ms 2424 KB Time limit exceeded
38 Execution timed out 1580 ms 3576 KB Time limit exceeded
39 Execution timed out 1578 ms 1272 KB Time limit exceeded
40 Execution timed out 1570 ms 1656 KB Time limit exceeded
41 Execution timed out 1566 ms 1912 KB Time limit exceeded
42 Execution timed out 1561 ms 1912 KB Time limit exceeded
43 Execution timed out 1550 ms 2296 KB Time limit exceeded
44 Execution timed out 1573 ms 3068 KB Time limit exceeded
45 Execution timed out 1569 ms 2296 KB Time limit exceeded
46 Execution timed out 1567 ms 3704 KB Time limit exceeded
47 Execution timed out 1575 ms 3576 KB Time limit exceeded
48 Execution timed out 1571 ms 3396 KB Time limit exceeded
49 Execution timed out 1563 ms 3960 KB Time limit exceeded
50 Execution timed out 1573 ms 1272 KB Time limit exceeded