oj.uz

Submission #17933

# Submission time Handle Problem Language Result Execution time Memory
17933 2016-01-13T08:46:42 Z Adilkhan Bank (IZhO14_bank) C++
52 / 100
 4 ms 916 KB 
#include <bits/stdc++.h>
 
#define pb push_back
#define endl "\n"
#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define fname "bank"
#define sz(x) (int)(x.size())
 
typedef long long ll;
 
using namespace std;
 
const ll N = (ll)(5e5) + 322;
const ll INF = (ll)(1e9);
const ll mod = (ll)(1e9) + 7;
const double eps = 1e-9;
 
int n, m, x, nz, sum, q[1248576], suff[33];
 
vector <int> a, b;
 
void calc(int pmsk, int x) {
    if (x == n) {
        puts("YES"); exit(0);
    }
    for (int mask = 0; mask < (1 << m); ++mask) {
        if ((mask & pmsk)) {continue;}
        if (m - (__builtin_popcount(mask) + __builtin_popcount(pmsk)) < (n - x - 1)) {continue;}
        if (q[((1 << m) - 1) ^ (pmsk ^ mask)] < suff[x + 1]) {continue;}
        if (q[mask] == a[x]) {
            calc(pmsk ^ mask, x + 1);
        }
    }
}
 
void precalc() {
    for (int mask = 0; mask < (1 << m); ++mask) {
        sum = 0;
        for (int i = 0; i < m; ++i) {
            if ((1 << i) & mask) {
                sum += b[i];           
            }      
        }
        q[mask] = sum; 
    } 
}
 
int main () {
    //os_base :: sync_with_stdio (false); cin.tie(0);
    //freopen(fname".in", "r", stdin);
    //freopen(fname".out", "w", stdout);
    scanf("%d%d", &n, &m);
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &x); a.pb(x);
    }
    for (int i = 1; i <= m; ++i) {
        scanf("%d", &x); b.pb(x);
    }
    sort(all(b));
    precalc();
    if (n > m) {
        puts("NO"); return 0;
    }
    if (n == m) {
        sort(all(a)); sort(all(b));
        if (a == b) {
            puts("YES");
        }else {
            puts("NO");
        }
        return 0;
    }
    if (n >= 15 || m >= 15) {
    	assert(0);
    	return 0;
    }
    sort(all(a));
    reverse(all(a));
    for (int i = n - 1; i >= 0; --i) {suff[i] = suff[i + 1] + a[i];}
    calc(0, 0);
  	puts("NO");
  	return 0;
}

Compilation message

bank.cpp: In function 'int main()':
bank.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
bank.cpp:57:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x); a.pb(x);
         ~~~~~^~~~~~~~~~
bank.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x); b.pb(x);
         ~~~~~^~~~~~~~~~

Subtask #1
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 456 KB Output is correct
4 Runtime error 4 ms 916 KB Execution killed with signal 11 (could be triggered by violating memory limits)
5 Halted 0 ms 0 KB -

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 916 KB Output is correct
2 Correct 2 ms 916 KB Output is correct
3 Correct 2 ms 916 KB Output is correct
4 Correct 2 ms 916 KB Output is correct
5 Correct 2 ms 916 KB Output is correct
6 Correct 2 ms 916 KB Output is correct
7 Correct 2 ms 916 KB Output is correct
8 Correct 2 ms 916 KB Output is correct
9 Correct 2 ms 916 KB Output is correct
10 Correct 2 ms 916 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 916 KB Output is correct
2 Correct 3 ms 916 KB Output is correct
3 Correct 3 ms 916 KB Output is correct
4 Correct 3 ms 916 KB Output is correct
5 Correct 3 ms 916 KB Output is correct
6 Correct 3 ms 916 KB Output is correct
7 Correct 3 ms 916 KB Output is correct
8 Correct 3 ms 916 KB Output is correct
9 Correct 3 ms 916 KB Output is correct
10 Correct 3 ms 916 KB Output is correct
11 Correct 3 ms 916 KB Output is correct

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 456 KB Output is correct
4 Runtime error 4 ms 916 KB Execution killed with signal 11 (could be triggered by violating memory limits)
5 Halted 0 ms 0 KB -