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sg定理的简单应用 代码很矬 500+ms#include<cstdio> #include<cmath> #include<algorithm> #include<iostream> #include<cstring> #include<vector> using namespace std; int s[110],k,sg[10010]; vector<int>pre[10010]; bool used[10010]; void getsg() { for(int i=0;i<=10000;i++) pre[i].clear(); memset(sg,0,sizeof(sg)); for(int i=0;i<=10000;i++) for(int j=1;j<=k;j++) if(i+s[j]<=10000) pre[i+s[j]].push_back(i); for(int i=1;i<=10000;i++) if(pre[i].size()) { memset(used,0,sizeof(used)); for(int j=0;j<pre[i].size();j++) used[sg[pre[i][j]]]=1; for(int j=0;;j++) if(!used[j]) { sg[i]=j; break; } } } int main() { int n,m,q; string str; while(scanf("%d",&k),k) { for(int i=1;i<=k;i++) scanf("%d",&s[i]); getsg(); str=""; int ans=0; scanf("%d",&n); while(n--) { scanf("%d",&m); ans=0; while(m--) { scanf("%d",&q); ans^=sg[q]; } if(ans) str=str+"W"; else str=str+"L"; } cout<<str<<endl; } } Followed by: Post your reply here: |
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