题意:

两个人轮流走,可以走到下一天或者下个月的今天(如果有的话)

给你一个日期(>=1990.1.1)先走到2001.11.4的人胜利,问先手胜负情况

思路:

np预处理出每一天的胜负情况,如果走到的都是必胜态,当前为必败态,否则为必胜态

/* ***********************************************
Author        :devil
************************************************ */
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <stack>
#include <map>
#include <unordered_map>
#include <string>
#include <time.h>
#include <cmath>
#include <stdlib.h>
#define LL long long
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define dep(i,a,b) for(int i=a;i>=b;i--)
#define ou(a) printf("%d\n",a)
#define pb push_back
#define pii pair<int,int>
#define mkp make_pair
#define IN freopen("in.txt","r",stdin);
#define OUT freopen("out.txt","w",stdout);
using namespace std;
const int inf=0x3f3f3f3f;
const int mod=1e9+7;
const int N=4e4+10;
unordered_map<int,int>mp;
bool f[N];
int nxt[N];
bool isrun(int year)
{
    return (year%4==0&&year%100||year%400==0);
}
void getnext(int &x)
{
    int y=x/10000,m=x%10000/100,d=x%100;
    if(d<28) {x++;return;}
    if(d==28)
    {
        if(m!=2||m==2&&isrun(y)) {x++;return;}
        x=y*10000+301;return;
    }
    if(d==29)
    {
        if(m==2&&isrun(y)) {x=y*10000+301;return;}
        x++;return;
    }
    if(d==30)
    {
        if(m==1||m==3||m==5||m==7||m==8||m==10||m==12) {x++;return;}
        x=y*10000+(m+1)*100+1;return;
    }
    if(m<12) {x=y*10000+(m+1)*100+1;return;}
    x=(y+1)*10000+101;return;
}
int getm(int x)
{
    if(x>20011004) return 0;
    int y=x/10000,m=x%10000/100,d=x%100;
    if(m==1&&d-isrun(y)>28) return 0;
    if((m==3||m==5||m==8||m==10)&&d==31) return 0;
    if(m==12) return x+8900;
    return x+100;
}
int main()
{
    int date=19000101,n=0;
    while(date<=20011104)
    {
        mp[date]=++n;
        getnext(date);
    }
    for(auto i=mp.begin();i!=mp.end();i++)
        nxt[mp[i->first]]=getm(i->first);
    f[mp[20011103]]=1;
    for(int i=n-1;i;i--)
        if(!f[i+1]||nxt[i]&&!f[mp[nxt[i]]])
            f[i]=1;
    int t,y,m,d;
    scanf("%d",&t);
    while(t--)
    {
        scanf("%d%d%d",&y,&m,&d);
        y=y*10000+m*100+d;
        printf("%s\n",f[mp[y]]?"YES":"NO");
    }
    return 0;
}