AcWing 893. 集合-Nim游戏
2021-01-27 21:15
阅读：628
标签：stream put ring ems ret nbsp ++ class memset
//只能拿某些特定个数的石子 #include#include #include #include using namespace std; const int N = 110, M = 10010; int n, m; int s[N], f[M]; int sg(int x) { if (f[x] != -1) return f[x]; unordered_setint> S; for (int i = 0; i ) { int sum = s[i]; if (x >= sum) S.insert(sg(x - sum)); } for (int i = 0; ; i ++ ) if (!S.count(i)) return f[x] = i; } int main() { cin >> m; for (int i = 0; i > s[i]; cin >> n; memset(f, -1, sizeof f); int res = 0; for (int i = 0; i ) { int x; cin >> x; res ^= sg(x); } if (res) puts("Yes"); else puts("No"); return 0; }
AcWing 893. 集合-Nim游戏
标签：stream put ring ems ret nbsp ++ class memset
原文地址：https://www.cnblogs.com/QingyuYYYYY/p/11918945.html
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