Submission #1017103

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017103		daviedu	Bank (IZhO14_bank)	C++17	Compilation error	0 ms	0 KiB

bank

#include <bits/stdc++.h>
using namespace std;

#define fastio ios_base::sync_with_stdio(0); cin.tie(0)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ll long long

struct P{
    ll x, y;
};

void dbg_out() { cerr << endl; }
template <typename H, typename... T>
void dbg_out(H h, T... t) { cerr << ' ' << h; dbg_out(t...); }
#define dbg(...) { cerr << #__VA_ARGS__ << ':'; dbg_out(__VA_ARGS__); }


// a little bit too slow

signed main(){
    fastio;
    int n, m;
    cin >> n >> m;
    vector<int> pay (n), notes (m);
    for (auto &a: pay) cin >> a;
    for (auto &a: notes) cin >> a;
    vector<int> dp (1 << m, -1), r (1 << m);
    int a, b;
    bool ans=false;
    for (int i=0; i<n; i++){
        for (int mask=1; mask<(1<<m); mask++){
            for (int j=0; j<m; j++){
                if (!(mask & (1 << j))) continue;
                if (dp[mask^(1<<j)] == i) {
                    dp[mask] = dp[mask^(1<<j)]; 
                    r[mask] = r[mask^(1<<j)]+notes[j];
                    break;
                }
                else if (dp[mask^(1<<j)] == i-1){
                    if (r[mask^(1<<j)]+notes[j] == pay[i]){
                        dp[mask] = i;
                        r[mask] = 0;
                        break;
                    }
                    dp[mask] = dp[mask^(1<<j)];
                    r[mask] = r[mask^(1<<j)]+notes[j]};
                }
            }
            if (dp[mask].first == n-1) ans = true;
        }
    }

    cout << (ans? "YES" : "NO") << '\n';
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:47:54: error: expected ';' before '}' token
   47 |                     r[mask] = r[mask^(1<<j)]+notes[j]};
      |                                                      ^
      |                                                      ;
bank.cpp:50:20: error: 'mask' was not declared in this scope; did you mean 'std::filesystem::perms::mask'?
   50 |             if (dp[mask].first == n-1) ans = true;
      |                    ^~~~
      |                    std::filesystem::perms::mask
In file included from /usr/include/c++/10/filesystem:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from bank.cpp:1:
/usr/include/c++/10/bits/fs_fwd.h:152:7: note: 'std::filesystem::perms::mask' declared here
  152 |       mask  = 07777,
      |       ^~~~
bank.cpp:29:9: warning: unused variable 'a' [-Wunused-variable]
   29 |     int a, b;
      |         ^
bank.cpp:29:12: warning: unused variable 'b' [-Wunused-variable]
   29 |     int a, b;
      |            ^
bank.cpp: At global scope:
bank.cpp:54:5: error: 'cout' does not name a type
   54 |     cout << (ans? "YES" : "NO") << '\n';
      |     ^~~~
bank.cpp:55:1: error: expected declaration before '}' token
   55 | }
      | ^