Ural 1201 Which Day Is It 题解

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Ural 1201 Which Day Is It? 题解

题意

打印一个月历。

输入

输入日$(1\sim31)$、月$(1\sim12)$、年$(1600\sim2400)$。

输出

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2
3
4
5
6
7
8
9
10
输入: 
16 3 2002
输出:
mon........4...11...18...25
tue........5...12...19...26
wed........6...13...20...27
thu........7...14...21...28
fri...1....8...15...22...29
sat...2....9..[16]..23...30
sun...3...10...17...24...31
1
2
3
4
5
6
7
8
9
10
输入: 
1 3 2002
输出:
mon........4...11...18...25
tue........5...12...19...26
wed........6...13...20...27
thu........7...14...21...28
fri.[.1]...8...15...22...29
sat...2....9...16...23...30
sun...3...10...17...24...31

打印$7$行，mon tue…这些都懂吧。在输入的那天打上[]。

Tips:

  1. 样例输出中的.其实是 (空格)。

  2. 输出的第一列日期前有三个.，第二列即以后一位数前有$4$个，两位数前有$3$个。
    例:

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    2
    3
    4
    5
    6
    7
    8
    9
    10
    输入: 
    30 1 2012
    输出:
    mon........2....9...16...23..[30]
    tue........3...10...17...24...31
    wed........4...11...18...25.....
    thu........5...12...19...26.....
    fri........6...13...20...27.....
    sat........7...14...21...28.....
    sun...1....8...15...22...29.....

  3. 如果输入的那一天是个一位数，则打印$[.x]$。

题解

  1. 找出这一个月的第一天是星期几。
    1. 知道1.1.1(公元元年1月1日)是星期一。
    2. 暴力推一下就可以了。
  2. 打印月历。

Tip: 口胡得很简单，写起来可能有点麻烦，要仔细。

程序

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// #pragma GCC optimize(2)
// #pragma G++ optimize(2)
// #pragma comment(linker,"/STACK:102400000,102400000")

// #include <bits/stdc++.h>
#include <map>
#include <set>
#include <list>
#include <array>
#include <cfenv>
#include <cmath>
#include <ctime>
#include <deque>
#include <mutex>
#include <queue>
#include <ratio>
#include <regex>
#include <stack>
#include <tuple>
#include <atomic>
#include <bitset>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <chrono>
#include <cstdio>
#include <cwchar>
#include <future>
#include <limits>
#include <locale>
#include <memory>
#include <random>
#include <string>
#include <thread>
#include <vector>
#include <cassert>
#include <climits>
#include <clocale>
#include <complex>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <ctgmath>
#include <cwctype>
#include <fstream>
#include <iomanip>
#include <numeric>
#include <sstream>
#include <ccomplex>
#include <cstdbool>
#include <iostream>
#include <typeinfo>
#include <valarray>
#include <algorithm>
#include <cinttypes>
#include <cstdalign>
#include <stdexcept>
#include <typeindex>
#include <functional>
#include <forward_list>
#include <system_error>
#include <unordered_map>
#include <unordered_set>
#include <scoped_allocator>
#include <condition_variable>
// #include <conio.h>
// #include <windows.h>
using namespace std;

typedef long long LL;
typedef unsigned int ui;
typedef unsigned long long ull;
typedef float fl;
typedef double ld;
typedef long double LD;
typedef pair<int,int> pii;
#if (WIN32) || (WIN64) || (__WIN32) || (__WIN64) || (_WIN32) || (_WIN64) || (WINDOWS)
#define lld "%I64d"
#define llu "%I64u"
#else
#define lld "%lld"
#define llu "%llu"
#endif
#define ui(n) ((unsigned int)(n))
#define LL(n) ((long long)(n))
#define ull(n) ((unsigned long long)(n))
#define fl(n) ((float)(n))
#define ld(n) ((double)(n))
#define LD(n) ((long double)(n))
#define char(n) ((char)(n))
#define Bool(n) ((bool)(n))
#define fixpoint(n) fixed<<setprecision(n)

const int INF=1061109567;
const int NINF=-1044266559;
const LL LINF=4557430888798830399;
const ld eps=1e-15;
#define MOD (1000000007)
#define PI (3.1415926535897932384626433832795028841971)

/*
#define MB_LEN_MAX 5
#define SHRT_MIN (-32768)
#define SHRT_MAX 32767
#define USHRT_MAX 0xffffU
#define INT_MIN (-2147483647 - 1)
#define INT_MAX 2147483647
#define UINT_MAX 0xffffffffU
#define LONG_MIN (-2147483647L - 1)
#define LONG_MAX 2147483647L
#define ULONG_MAX 0xffffffffUL
#define LLONG_MAX 9223372036854775807ll
#define LLONG_MIN (-9223372036854775807ll - 1)
#define ULLONG_MAX 0xffffffffffffffffull
*/

#define MP make_pair
#define MT make_tuple
#define All(a) (a).begin(),(a).end()
#define pall(a) (a).rbegin(),(a).rend()
#define log2(x) log(x)/log(2)
#define Log(x,y) log(x)/log(y)
#define SZ(a) ((int)(a).size())
#define rep(i,n) for(int i=0;i<((int)(n));i++)
#define rep1(i,n) for(int i=1;i<=((int)(n));i++)
#define repa(i,a,n) for(int i=((int)(a));i<((int)(n));i++)
#define repa1(i,a,n) for(int i=((int)(a));i<=((int)(n));i++)
#define repd(i,n) for(int i=((int)(n))-1;i>=0;i--)
#define repd1(i,n) for(int i=((int)(n));i>=1;i--)
#define repda(i,n,a) for(int i=((int)(n));i>((int)(a));i--)
#define repda1(i,n,a) for(int i=((int)(n));i>=((int)(a));i--)
#define FOR(i,a,n,step) for(int i=((int)(a));i<((int)(n));i+=((int)(step)))
#define repv(itr,v) for(__typeof((v).begin()) itr=(v).begin();itr!=(v).end();itr++)
#define repV(i,v) for(auto i:v)
#define repE(i,v) for(auto &i:v)
#define MS(x,y) memset(x,y,sizeof(x))
#define MC(x) MS(x,0)
#define MINF(x) MS(x,63)
#define MCP(x,y) memcpy(x,y,sizeof(y))
#define sqr(x) ((x)*(x))
#define UN(v) sort(All(v)),v.erase(unique(All(v)),v.end())
#define filein(x) freopen(x,"r",stdin)
#define fileout(x) freopen(x,"w",stdout)
#define fileio(x)\
	freopen(x".in","r",stdin);\
	freopen(x".out","w",stdout)
#define filein2(filename,name) ifstream name(filename,ios::in)
#define fileout2(filename,name) ofstream name(filename,ios::out)
#define file(filename,name) fstream name(filename,ios::in|ios::out)
#define Pause system("pause")
#define Cls system("cls")
#define fs first
#define sc second
#define PC(x) putchar(x)
#define GC(x) x=getchar()
#define Endl PC('\n')
#define SF scanf
#define PF printf

inline int Read()
{
    int X=0,w=0;char ch=0;while(!isdigit(ch)){w|=ch=='-';ch=getchar();}while(isdigit(ch))X=(X<<3)+(X<<1)+(ch^48),ch=getchar();
	return w?-X:X;
}
inline void Write(int x){if(x<0)putchar('-'),x=-x;if(x>9)Write(x/10);putchar(x%10+'0');}

inline LL powmod(LL a,LL b){LL RES=1;a%=MOD;assert(b>=0);for(;b;b>>=1){if(b&1)RES=RES*a%MOD;a=a*a%MOD;}return RES%MOD;}
inline LL gcdll(LL a,LL b){return b?gcdll(b,a%b):a;}
const int dx[]={0,1,0,-1,1,-1,-1,1};
const int dy[]={1,0,-1,0,-1,-1,1,1};
/************************************************************Begin************************************************************/
const int maxn=INF;
const int days[]={0,31,0,31,30,31,30,31,31,30,31,30,31};
const string weeks[]={"","mon","tue","wed","thu","fri","sat","sun"};
// 1.1.1 => mon

inline int getday(int year,int month)
{
	if(month==2)
	{
		if(year%400==0) return 29;
		if(year%100==0) return 28;
		return year%4==0?29:28;
	}
	else return days[month];
}

inline bool cmp(int y1,int m1,int y2,int m2)
{
	if(y1==y2) return m1<m2; else return y1<y2;
}

inline int getweek(int year,int month)
{
	int y=1,m=1,w=0;
	while(y!=year||m!=month)
	{
		if(cmp(y,m,year,month))
		{
			w=(w+getday(y,m)%7)%7;

			m++;
			if(m==13)
			{
				y++;
				m=1;
			}
		}
	}

	return w+1;
}

inline void print(int year,int month,int day)
{
	vector<int> w[8];
	int lst=getweek(year,month);
	w[lst].push_back(1);

	rep1(i,lst-1) w[i].push_back(0);

	int pos[15];
	pos[0]=6;
	rep1(i,5) pos[i]=pos[i-1]+5;

	repa1(i,2,getday(year,month))
	{
		lst++;
		if(lst==8) lst=1;

		w[lst].push_back(i);
	}

	string str[8];
	rep1(i,7)
	{
		str[i]=weeks[i];
		rep(j,100) str[i]+=" ";

		rep(j,w[i].size())
		{
			int x=w[i][j];

			if(x) str[i][pos[j]]=(x%10+'0');
			if(x/10) str[i][pos[j]-1]=(x/10+'0');

			if(x==day)
			{
				str[i][pos[j]-2]='[';
				str[i][pos[j]+1]=']';
			}
		}
	}

	rep1(i,7) cout<<str[i]<<endl;
}

int main()
{
	int year,month,day;
	cin>>day>>month>>year;
	print(year,month,day);

	return 0;
}
/*************************************************************End**************************************************************/
__EOF__