64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
#include<iostream>
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#include<string>
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#include<cstring>
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#include<algorithm>
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#include<cstdio>
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#include<cmath>
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#include<cctype>
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#include<iomanip>
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using namespace std;
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const int maxn=100000;
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int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
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bool isleap(int x){
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if(x%400==0)return true;
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if(x%100!=0&&x%4==0)return true;
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return false;
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}
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int f(int y,int m,int d){
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if(isleap(y))a[2]=29;
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int ret=d;
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for(int i=1;i<m;++i)
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ret+=a[i];
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a[2]=28;
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return ret;
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}
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bool isno(int y,int m,int d){
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if(isleap(y))a[2]=29;
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if(m>12||m<1)return true;
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if(d>a[m]||d<1)return true;
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a[2]=28;
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return false;
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}
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int main(){
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int y,m,d;
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while(cin>>y>>m>>d){
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if(isno(y,m,d)){
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cout<<"illegal"<<endl;
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continue;
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}
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int x=f(y,m,d)%7-1;
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if(y<2008){
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for(int i=y;i<2008;++i)
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if(isleap(i))x+=5;
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else x+=6;
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}
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else {
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for(int i=2008;i<y;++i)
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if(isleap(i))x+=2;
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else x+=1;
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}
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x%=7;
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if(x<0)x+=7;
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switch(x){
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case 0:cout<<"Tuesday"<<endl;break;
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case 1:cout<<"Wednesday"<<endl;break;
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case 2:cout<<"Thursday"<<endl;break;
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case 3:cout<<"Friday"<<endl;break;
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case 4:cout<<"Saturday"<<endl;break;
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case 5:cout<<"Sunday"<<endl;break;
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case 6:cout<<"Monday"<<endl;break;
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}
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}
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return 0;
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}
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