题意:
限定普通Nim每步拿的的个数,求当前状态是必胜还是必败
分析:
求sg的时候改改就好了,−−为了这个vis数组我unordered_set都上了还是T,看了题解发现改成100就可以了,我表示。。。似懂非懂,谁有科学的解释求解答吧
代码:
//
// Created by TaoSama on 2015-11-21
// Copyright (c) 2015 TaoSama. All rights reserved.
//
//#pragma comment(linker, "/STACK:1024000000,1024000000")
#include <algorithm>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <string>
#include <set>
#include <vector>
#include <unordered_set>
using namespace std;
#define pr(x) cout << #x << " = " << x << " "
#define prln(x) cout << #x << " = " << x << endl
const int N = 1e5 + 10, INF = 0x3f3f3f3f, MOD = 1e9 + 7;
int n, m, s[105];
int sg[10005], mark[10005], kase;
int dfs(int x) {
int& ret = sg[x];
if(mark[x] == kase) return ret;
mark[x] = kase;
bool vis[105] = {};
for(int i = 1; i <= n; ++i)
if(x >= s[i]) vis[dfs(x - s[i])] = true;
else break;
for(int i = 0; ; ++i)
if(!vis[i]) {ret = i; break;}
return ret;
}
int main() {
#ifdef LOCAL
freopen("C:\\Users\\TaoSama\\Desktop\\in.txt", "r", stdin);
// freopen("C:\\Users\\TaoSama\\Desktop\\out.txt","w",stdout);
#endif
ios_base::sync_with_stdio(0);
while(scanf("%d", &n) == 1 && n) {
++kase;
for(int i = 1; i <= n; ++i) scanf("%d", s + i);
sort(s + 1, s + 1 + n);
scanf("%d", &m);
while(m--) {
int k; scanf("%d", &k);
int ans = 0;
while(k--) {
int x; scanf("%d", &x);
ans ^= dfs(x);
}
putchar(ans ? 'W' : 'L');
}
puts("");
}
return 0;
}