題目連結
d075: Q-6-10. 置物櫃出租
我的想法
我用子集合的方式,如:ZeroJudge a522,求出可退房間的數量,最後從 S 開始往上找是否有可退房數量的房間數。
參考解答
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| #include <bits/stdc++.h> #define ouo ios_base::sync_with_stdio(false), cin.tie(0) #define ll long long #define db double using namespace std;
int main() { int n, M, S; cin >> n >> M >> S; int c[n], sum = 0; for (int i = 0; i < n; i++) { cin >> c[i]; sum += c[i]; }
bool h[M + 1] = {false}; h[0] = true; for (int i = 0; i < n; i++) { bool check[M + 1] = {false}; for (int j = 0; j <= M; j++) { if (h[j] && !check[j]) { if (h[j + c[i]] == true) { continue; } h[j + c[i]] = true; check[j + c[i]] = true; } } } int x = S - (M - sum); if (x < 0) x = 0; for (int i = x; i <= M; i++) { if (h[i]) { cout << i << "\n"; break; } } return 0; }
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