求优化

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int m;
	cin>>m;
	if(m==1)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"          "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<endl;
		cout<<"  "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<endl;
		cout<<" "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<endl;
		cout<<" "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<endl;
		cout<<" "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	if(m==2)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"                      "<<1<<"   "<<2<<endl;
		cout<<"  "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<endl;
		cout<<" "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<endl;
		cout<<" "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<endl;
		cout<<" "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<endl;
	}
	if(m==3)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"                      "<<1<<"   "<<2<<endl;
		cout<<"  "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<endl;
		cout<<" "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<endl;
		cout<<" "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<endl;
		cout<<" "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<endl;
		cout<<" "<<31<<endl;
	}
	if(m==4)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"      "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<endl;
		cout<<"  "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<endl;
		cout<<" "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<endl;
		cout<<" "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<endl;
		cout<<" "<<28<<"  "<<29<<"  "<<30<<endl;
	}
	if(m==5)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"              "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<endl;
		cout<<"  "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<endl;
		cout<<" "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<endl;
		cout<<" "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<endl;
		cout<<" "<<26<<"  "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	if(m==6)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"                          "<<1<<endl;
		cout<<"  "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<endl;
		cout<<"  "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<endl;
		cout<<" "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<endl;
		cout<<" "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<"  "<<29<<endl;
		cout<<" "<<30<<endl;
	}
	if(m==7)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"      "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<endl;
		cout<<"  "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<endl;
		cout<<" "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<endl;
		cout<<" "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<endl;
		cout<<" "<<28<<"  "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	if(m==8)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"                  "<<1<<"   "<<2<<"   "<<3<<endl;
		cout<<"  "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<endl;
		cout<<" "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<endl;
		cout<<" "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<endl;
		cout<<" "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	if(m==9)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"  "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<endl;
		cout<<"  "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<endl;
		cout<<" "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<endl;
		cout<<" "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<endl;
		cout<<" "<<29<<"  "<<30<<endl;
	}
	if(m==10)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"          "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<endl;
		cout<<"  "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<endl;
		cout<<" "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<endl;
		cout<<" "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<endl;
		cout<<" "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	if(m==11)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"                      "<<1<<"   "<<2<<endl;
		cout<<"  "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<"   "<<8<<"   "<<9<<endl;
		cout<<" "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<"  "<<15<<"  "<<16<<endl;
		cout<<" "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<"  "<<22<<"  "<<23<<endl;
		cout<<" "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<"  "<<29<<"  "<<30<<endl;
	}
	if(m==12)
	{
		cout<<"MON"<<" "<<"TUE"<<" "<<"WED"<<" "<<"THU"<<" "<<"FRI"<<" "<<"SAT"<<" "<<"SUN"<<endl;
		cout<<"  "<<1<<"   "<<2<<"   "<<3<<"   "<<4<<"   "<<5<<"   "<<6<<"   "<<7<<endl;
		cout<<"  "<<8<<"   "<<9<<"  "<<10<<"  "<<11<<"  "<<12<<"  "<<13<<"  "<<14<<endl;
		cout<<" "<<15<<"  "<<16<<"  "<<17<<"  "<<18<<"  "<<19<<"  "<<20<<"  "<<21<<endl;
		cout<<" "<<22<<"  "<<23<<"  "<<24<<"  "<<25<<"  "<<26<<"  "<<27<<"  "<<28<<endl;
		cout<<" "<<29<<"  "<<30<<"  "<<31<<endl;
	}
	return 0;
}