Submission #885969

#TimeUsernameProblemLanguageResultExecution timeMemory
885969Zero_OPBank (IZhO14_bank)C++14
100 / 100
103 ms8648 KiB
#include<bits/stdc++.h> using namespace std; #define range(v) begin(v), end(v) #define compact(v) v.erase(unique(range(v)), end(v)) template<class T> bool minimize(T& a, T b){ if(a > b) return a = b, true; return false; } template<class T> bool maximize(T& a, T b){ if(a < b) return a = b, true; return false; } typedef long long ll; typedef unsigned long long ull; typedef long double ld; void Zero_OP(){ int n, m; cin >> n >> m; vector<int> a(n), b(m); for(int i = 0; i < n; ++i){ cin >> a[i]; } for(int i = 0; i < m; ++i){ cin >> b[i]; } vector<pair<int, int>> dp(1 << m, make_pair(-1, -1)); dp[0] = {0, 0}; for(int mask = 0; mask < (1 << m); ++mask){ if(dp[mask].first == -1) continue; if(dp[mask].first == n){ cout << "YES\n"; return; } // cout << mask << " : " << dp[mask].first << ' ' << dp[mask].second << '\n'; for(int i = 0; i < m; ++i){ if(mask >> i & 1 ^ 1){ int newMask = mask ^ (1 << i); if(dp[mask].second + b[i] == a[dp[mask].first]){ maximize(dp[newMask], make_pair(dp[mask].first + 1, 0)); } else{ maximize(dp[newMask], make_pair(dp[mask].first, dp[mask].second + b[i])); } } } } cout << "NO\n"; } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); if(fopen("antuvu.inp", "r")){ freopen("antuvu.inp", "r", stdin); freopen("antuvu.out", "w", stdout); } Zero_OP(); return 0; }

Compilation message (stderr)

bank.cpp: In function 'void Zero_OP()':
bank.cpp:44:26: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   44 |             if(mask >> i & 1 ^ 1){
      |                ~~~~~~~~~~^~~
bank.cpp: In function 'int main()':
bank.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen("antuvu.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:65:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         freopen("antuvu.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
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