oj.uz

Submission #37866

# Submission time Handle Problem Language Result Execution time Memory
37866 2017-12-28T10:50:43 Z Talant Bank (IZhO14_bank) C++14
71 / 100
 122 ms 10120 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 used[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 = 0; i < m; i ++) {
                for (int j = 0; j < m; j ++) {
                        used[a[i] + a[j]] = 1;
                }
        }
        for (int i = 1; i <= n; i ++) {
                if (used[a[i]] != 1) {
                        cout << "NO";
                return 0;
                }
        }
        if (n >= 7 && m > 16) {
                cout << "YES";
                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:105:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                                 for (int k = 0; k < vec[i].size(); k ++) {
                                                 ~~^~~~~~~~~~~~~~~
bank.cpp:29:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%d", &a[i]);
                 ~~~~~~^~~~~~~~~~~~~
bank.cpp:34:23: 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 5 ms 376 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 4 ms 652 KB Output is correct
5 Correct 70 ms 4576 KB Output is correct
6 Correct 2 ms 4576 KB Output is correct
7 Correct 2 ms 4576 KB Output is correct
8 Correct 68 ms 4620 KB Output is correct
9 Correct 70 ms 4620 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4620 KB Output is correct
2 Correct 2 ms 4620 KB Output is correct
3 Correct 2 ms 4620 KB Output is correct
4 Correct 2 ms 4620 KB Output is correct
5 Correct 2 ms 4620 KB Output is correct
6 Correct 2 ms 4620 KB Output is correct
7 Correct 2 ms 4620 KB Output is correct
8 Correct 2 ms 4620 KB Output is correct
9 Correct 2 ms 4620 KB Output is correct
10 Correct 2 ms 4620 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4620 KB Output is correct
2 Correct 2 ms 4620 KB Output is correct
3 Correct 2 ms 4620 KB Output is correct
4 Correct 2 ms 4620 KB Output is correct
5 Correct 2 ms 4620 KB Output is correct
6 Correct 3 ms 4620 KB Output is correct
7 Correct 3 ms 4620 KB Output is correct
8 Correct 2 ms 4620 KB Output is correct
9 Correct 2 ms 4620 KB Output is correct
10 Correct 2 ms 4620 KB Output is correct
11 Correct 2 ms 4620 KB Output is correct

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 4 ms 652 KB Output is correct
5 Correct 70 ms 4576 KB Output is correct
6 Correct 2 ms 4576 KB Output is correct
7 Correct 2 ms 4576 KB Output is correct
8 Correct 68 ms 4620 KB Output is correct
9 Correct 70 ms 4620 KB Output is correct
10 Correct 2 ms 4620 KB Output is correct
11 Correct 2 ms 4620 KB Output is correct
12 Correct 2 ms 4620 KB Output is correct
13 Correct 2 ms 4620 KB Output is correct
14 Correct 2 ms 4620 KB Output is correct
15 Correct 2 ms 4620 KB Output is correct
16 Correct 2 ms 4620 KB Output is correct
17 Correct 2 ms 4620 KB Output is correct
18 Correct 2 ms 4620 KB Output is correct
19 Correct 2 ms 4620 KB Output is correct
20 Correct 3 ms 4620 KB Output is correct
21 Correct 2 ms 4620 KB Output is correct
22 Correct 2 ms 4620 KB Output is correct
23 Correct 2 ms 4620 KB Output is correct
24 Correct 2 ms 4620 KB Output is correct
25 Correct 3 ms 4620 KB Output is correct
26 Correct 3 ms 4620 KB Output is correct
27 Correct 2 ms 4620 KB Output is correct
28 Correct 2 ms 4620 KB Output is correct
29 Correct 2 ms 4620 KB Output is correct
30 Correct 2 ms 4620 KB Output is correct
31 Correct 69 ms 7008 KB Output is correct
32 Correct 122 ms 10120 KB Output is correct
33 Correct 68 ms 10120 KB Output is correct
34 Correct 34 ms 10120 KB Output is correct
35 Correct 17 ms 10120 KB Output is correct
36 Correct 2 ms 10120 KB Output is correct
37 Correct 72 ms 10120 KB Output is correct
38 Correct 75 ms 10120 KB Output is correct
39 Correct 2 ms 10120 KB Output is correct
40 Incorrect 68 ms 10120 KB Output isn't correct
41 Halted 0 ms 0 KB -