Submission #548889

#TimeUsernameProblemLanguageResultExecution timeMemory
548889BlossomstreamBank (IZhO14_bank)C++14
71 / 100
390 ms262144 KiB
#include<bits/stdc++.h> using namespace std; int n, m; int a[1000]; int b[1000]; vector<int> d1[1024]; vector<int> d2[1024]; int sum[1<<20]; int main() { //freopen("bank.in", "r", stdin); cin >> n >> m; for(int i = 0; i < n; i++) { cin >> a[i]; } for(int i = 0; i < m; i++) { cin >> b[i]; } for(int i = 0; i < (1<<m); i++) { for(int j = 0; (1<<j) <= i; j++) { if((i & (1<<j)) != 0) sum[i] += b[j]; } } int x = (n + 1)/2; int y = n/2; for(int i = 0; i < x; i++) { for(int j = 0; j < (1<<m); j++) { if(sum[j] == a[i]) d1[1<<i].push_back(j); } } d1[0].push_back(0); for(int i = 1; i < (1<<x); i++) { for(int j = 0; (1<<j) <= i; j++) { if(i == (1<<j)) continue; if((i & (1<<j)) != 0) { for(int l: d1[1<<j]) { for(int k: d1[i - (1<<j)]) { if((l & k) == 0) d1[i].push_back(l + k); } } } } } for(int i = 0; i < y; i++) { for(int j = 0; j < (1<<m); j++) { if(sum[j] == a[i + x]) d2[1<<i].push_back(j); } } d2[0].push_back(0); for(int i = 1; i < (1<<y); i++) { for(int j = 0; (1<<j) <= i; j++) { if(i == (1<<j)) continue; if((i & (1<<j)) != 0) { for(int l: d2[1<<j]) { for(int k: d2[i - (1<<j)]) { if((l & k) == 0) d2[i].push_back(l + k); } } } } } for(int i: d1[(1<<x) - 1]) { for(int j: d2[(1<<y) - 1]) { if((i & j) == 0) { cout << "YES"; return 0; } } } cout << "NO"; }
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