Submission #853463

#	Time	Username	Problem	Language	Result	Execution time	Memory
853463		vjudge1	Uplifting Excursion (BOI22_vault)	C++17	Compilation error	0 ms	0 KiB

vault

#include <bits/stdc++.h>

using namespace std;

#define endl "\n"

void solve(){
	long long M, L; cin >> M >> L;
	vector<int> val(2 * M + 1);
	for(int i = -M; i <= M; i++){
		val[i + M] = i;
	}
	vector<long long> A(2 * M + 1);
	for(auto &i : A) cin >> i;
	if(L < 0){
		L *= -1;
		for(int i = 0; i < M; i++){
			swap(A[i], A[2 * M - i]);
		}
	}
	long long max_sum = 0;
	for(int i = M; i <= 2 * M; i++){
		max_sum += val[i] * A[i];
	}
	if(max_sum < L){
		cout << "impossible" << endl;
		return;
	}
	vector<int> ans(max_sum + 1, -1);
	ans[0] = 0;
	for(int i = M + 1; i <= 2 * M; i++){
		for(int _ = 0; _ < A[i]; _++){
			for(int w = max_sum; w >= 0; w--){
				if(ans[w] != -1) ans[w + val[i]] = max(ans[w + val[i]], ans[w] + 1);
			}
		}
	}
	for(int i = 0; i < M; i++){
		for(int _ = 0; _ < A[i]; _++){
			for(int w = val[i]; w <= max_sum; w++){
				if(ans[w] != -1) ans[w + val[i]] = max(ans[w + val[i]], ans[w] + 1);
			}
		}
	}
	if(ans[L] == -1) cout << "impossible" << endl;
	else cout << ans[L] + A[M] << endl;
}

int main(){1048576
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	solve();
}

Compilation message (stderr)

vault.cpp: In function 'int main()':
vault.cpp:49:19: error: expected ';' before 'ios_base'
   49 | int main(){1048576
      |                   ^
      |                   ;
   50 |  ios_base::sync_with_stdio(0);
      |  ~~~~~~~~          
vault.cpp:49:12: warning: statement has no effect [-Wunused-value]
   49 | int main(){1048576
      |            ^~~~~~~