oj.uz

Submission #37857

# Submission time Handle Problem Language Result Execution time Memory
37857 2017-12-28T10:43:21 Z Talant Bank (IZhO14_bank) C++14
71 / 100
 1000 ms 100344 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define OK puts("OK");
#define pb push_back
#define mk make_pair

using namespace std;

typedef long long ll;

const ll inf = (ll)1e18 + 7;
const ll N = (ll)1e6 + 7;

int n,m;
int a[21],b[21];
int dp[21][1 << 20];
int t[1 << 20],sum1;
vector <int> vec[21],vec1,vec2;
int p[N];
int us[N],us1[N];

int main () {
        cin >> n >> m;

        for (int i = 1; i <= n; i ++) {
                scanf ("%d", &a[i]);
                us1[a[i]] ++;
        }

        for (int i = 0; i < m; i ++) {
                scanf ("%d", &b[i]);
                us[b[i]] ++;
        }
        for (int i = 1; i <= n; i ++) {
                if (us[a[i]] > 0 && us1[a[i]] > 0)
                        us[a[i]] --,us1[a[i]] --;
                else
                        vec2.pb(a[i]);
        }
        for (int i = 0; i < m; i ++) {
                for (int j = 1; j <= us[b[i]]; j ++) {
                        sum1 += b[i];
                        vec1.pb(b[i]);
                }
                us[b[i]] = 0;
        }
        n = vec2.size();
        m = vec1.size();

        for (int i = 1; i <= n; i ++)
                a[i] = vec2[i - 1];

        for (int i = 0; i < m; i ++)
                b[i] = vec1[i];

        for (int i = 1; i <= n; i ++)
                p[i] = p[i - 1] + a[i];

        for (int i = 0; i < (1 << m); i ++) {
                int sum = 0;
                for (int j = 0; j < m; j ++)
                        if (i & (1 << j))
                                sum += b[j];
                t[i] = sum;
        }

        dp[1][0] = 1;
        vec[1].pb(0);

        if (p[n] > sum1) {
                cout << "NO";
                return 0;
        }
        if (n * 2 > m) {
                cout << "NO";
                return 0;
        }

        for (int i = 1; i <= n; i ++) {
                for (int j = 0; j < (1 << m); j ++) {
                        if (t[j] == a[i]) {
                                if (n == 1) {
                                        cout << "YES";
                                        return 0;
                                }

                                for (int k = 0; k < vec[i].size(); k ++) {
                                        if (!(vec[i][k] & j)) {
                                                int q = sum1 - t[(vec[i][k] | j)];
                                                if (q >= p[n] - p[i] && (m - __builtin_popcount(vec[i][k] | j)) >= n - i) {
                                                        vec[i + 1].pb(vec[i][k] | j);

                                                        dp[i + 1][vec[i][k] | j] = 1;

                                                        if (n == i) {
                                                                cout << "YES" << endl;
                                                                return 0;
                                                        }
                                                }
                                                else
                                                        break;
                                        }
                                }
                        }
                }
        }

        if (n == 1) {
                cout << "NO" << endl;
                return 0;
        }
        for (int i = 0; i < (1 << m); i ++) {
                if (dp[n + 1][i] == 1) {
                        cout << "YES" << endl;
                        return 0;
                }
        }

        cout << "NO" << endl;
        return 0;

}

Compilation message

bank.cpp: In function 'int main()':
bank.cpp:89:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                                 for (int k = 0; k < vec[i].size(); k ++) {
                                                 ~~^~~~~~~~~~~~~~~
bank.cpp:28:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%d", &a[i]);
                 ~~~~~~^~~~~~~~~~~~~
bank.cpp:33:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%d", &b[i]);
                 ~~~~~~^~~~~~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 456 KB Output is correct
4 Correct 4 ms 584 KB Output is correct
5 Correct 71 ms 4568 KB Output is correct
6 Correct 2 ms 4568 KB Output is correct
7 Correct 2 ms 4568 KB Output is correct
8 Correct 70 ms 4576 KB Output is correct
9 Correct 70 ms 4612 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4612 KB Output is correct
2 Correct 2 ms 4612 KB Output is correct
3 Correct 2 ms 4612 KB Output is correct
4 Correct 2 ms 4612 KB Output is correct
5 Correct 1 ms 4612 KB Output is correct
6 Correct 2 ms 4612 KB Output is correct
7 Correct 2 ms 4612 KB Output is correct
8 Correct 2 ms 4612 KB Output is correct
9 Correct 2 ms 4612 KB Output is correct
10 Correct 2 ms 4612 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4612 KB Output is correct
2 Correct 3 ms 4612 KB Output is correct
3 Correct 2 ms 4612 KB Output is correct
4 Correct 2 ms 4612 KB Output is correct
5 Correct 2 ms 4612 KB Output is correct
6 Correct 3 ms 4612 KB Output is correct
7 Correct 3 ms 4612 KB Output is correct
8 Correct 3 ms 4612 KB Output is correct
9 Correct 2 ms 4612 KB Output is correct
10 Correct 2 ms 4612 KB Output is correct
11 Correct 3 ms 4612 KB Output is correct

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 456 KB Output is correct
4 Correct 4 ms 584 KB Output is correct
5 Correct 71 ms 4568 KB Output is correct
6 Correct 2 ms 4568 KB Output is correct
7 Correct 2 ms 4568 KB Output is correct
8 Correct 70 ms 4576 KB Output is correct
9 Correct 70 ms 4612 KB Output is correct
10 Correct 2 ms 4612 KB Output is correct
11 Correct 2 ms 4612 KB Output is correct
12 Correct 2 ms 4612 KB Output is correct
13 Correct 2 ms 4612 KB Output is correct
14 Correct 1 ms 4612 KB Output is correct
15 Correct 2 ms 4612 KB Output is correct
16 Correct 2 ms 4612 KB Output is correct
17 Correct 2 ms 4612 KB Output is correct
18 Correct 2 ms 4612 KB Output is correct
19 Correct 2 ms 4612 KB Output is correct
20 Correct 3 ms 4612 KB Output is correct
21 Correct 3 ms 4612 KB Output is correct
22 Correct 2 ms 4612 KB Output is correct
23 Correct 2 ms 4612 KB Output is correct
24 Correct 2 ms 4612 KB Output is correct
25 Correct 3 ms 4612 KB Output is correct
26 Correct 3 ms 4612 KB Output is correct
27 Correct 3 ms 4612 KB Output is correct
28 Correct 2 ms 4612 KB Output is correct
29 Correct 2 ms 4612 KB Output is correct
30 Correct 3 ms 4612 KB Output is correct
31 Correct 72 ms 6828 KB Output is correct
32 Correct 124 ms 10232 KB Output is correct
33 Correct 77 ms 10232 KB Output is correct
34 Correct 38 ms 10232 KB Output is correct
35 Correct 20 ms 10232 KB Output is correct
36 Correct 2 ms 10232 KB Output is correct
37 Correct 73 ms 10232 KB Output is correct
38 Correct 74 ms 10232 KB Output is correct
39 Correct 2 ms 10232 KB Output is correct
40 Correct 82 ms 10232 KB Output is correct
41 Correct 34 ms 10232 KB Output is correct
42 Correct 164 ms 11464 KB Output is correct
43 Correct 81 ms 11464 KB Output is correct
44 Correct 2 ms 11464 KB Output is correct
45 Correct 75 ms 11464 KB Output is correct
46 Correct 79 ms 11464 KB Output is correct
47 Correct 2 ms 11464 KB Output is correct
48 Correct 69 ms 11464 KB Output is correct
49 Correct 69 ms 11464 KB Output is correct
50 Correct 2 ms 11464 KB Output is correct
51 Correct 137 ms 11464 KB Output is correct
52 Execution timed out 1084 ms 100344 KB Time limit exceeded
53 Halted 0 ms 0 KB -