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NOI.AC

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#212492#3839. 小t爱算数(mul)yhmm10015ms1244kbC++111004b2024-10-19 10:11:432024-10-19 12:32:25

answer

#include<bits/stdc++.h>
using namespace std;
long long a,b,x[100001],y[100001],ans[100001],f=1;
int main(){
	while(cin>>a)
	{
		if(a==-1)
		{
			break;
		}
		cin>>b;
		x[a]=b;
	}
	while(cin>>a)
	{
		if(a==-1)
		{
			break;
		}
		cin>>b;
		y[a]=b;
	}
	for(int i=0;i<=1000;i++)
	{
		for(int j=0;j<=1000;j++)
		{
			ans[i+j]=ans[i+j]+x[i]*y[j];
		}
	}
	for(int i=2000;i>=0;i--)
	{
		if(ans[i]==0)
		{
			continue;
		}
		if(f)
		{
			if(ans[i]==1)
			{
				cout<<"x^"<<i;
			}
			else if(ans[i]==-1)
			{
				cout<<"-x^"<<i;
			}
			else
			{
				cout<<ans[i]<<"x^"<<i;
			}
		}
		else
		{
			if(i==0)
			{
				if(ans[i]>0)
				{
					cout<<'+';
				}
				cout<<ans[i];
			}
			else
			{
				if(ans[i]==1)
				{
					cout<<"+x^"<<i;
				}
				else if(ans[i]==-1)
				{
					cout<<"-x^"<<i;
				}
				else
				{
					if(ans[i]>0)
					{
						cout<<'+';
					}
					cout<<ans[i]<<"x^"<<i;
				}
			}
		}
		f=0;
	}
	return 0;
}

Details

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 0ms
memory: 1224kb

input:

10 -7 9 3 7 4 6 -3 4 2 3 -7 2 -7 0 -3 -1
10 -9 8 9 7 -6 6 7 5 -2 3 -9 2 -9 1 7 0 3 -1

output:

63x^20-27x^19-63x^18+33x^17-40x^16+71x^15-75x^14+172x^13+88x^12-145x^11-16x^10-11x^9-7x^8+5x^7+15x^6...

result:

ok single line: '63x^20-27x^19-63x^18+33x^17-40...146x^5+20x^4-43x^3+6x^2-21x^1-9'

Test #2:

score: 10
Accepted
time: 0ms
memory: 1228kb

input:

4 3 2 -2 -1
4 3 2 2 -1

output:

9x^8-4x^4

result:

ok single line: '9x^8-4x^4'

Test #3:

score: 10
Accepted
time: 2ms
memory: 1228kb

input:

100 -7 99 73 98 30 97 44 96 -23 95 -40 94 92 93 -87 92 -27 91 40 90 -3 89 -9 88 -60 87 99 86 -16 85 ...

output:

-126x^199+1958x^198-5539x^197-8128x^196-11858x^195-8722x^194+5062x^193-10855x^192+2208x^191-1348x^19...

result:

ok single line: '-126x^199+1958x^198-5539x^197-...^4-8639x^3+3990x^2+2463x^1-2156'

Test #4:

score: 10
Accepted
time: 3ms
memory: 1240kb

input:

1000 -807 999 73 998 930 997 544 996 -923 995 -440 994 492 993 -987 992 -327 991 840 990 -303 989 -7...

output:

-736791x^1999-60050x^1998+390877x^1997-91166x^1996+209275x^1995+495327x^1994+131675x^1993-2564166x^1...

result:

ok single line: '-736791x^1999-60050x^1998+3908...9x^3-646021x^2+537451x^1-473709'

Test #5:

score: 10
Accepted
time: 2ms
memory: 1244kb

input:

1000 -807 999 73 998 930 997 544 996 -923 995 -440 994 492 993 -987 992 -327 991 840 990 -303 989 -7...

output:

-736791x^1999-60050x^1998+390877x^1997-91166x^1996+209275x^1995+495327x^1994+131675x^1993-2564166x^1...

result:

ok single line: '-736791x^1999-60050x^1998+3908...9x^3-646021x^2+537451x^1-473709'

Test #6:

score: 10
Accepted
time: 2ms
memory: 1240kb

input:

1000 -807 999 73 998 930 997 544 996 -923 995 -440 994 492 993 -987 992 -327 991 840 990 -303 989 -7...

output:

-736791x^2000-60050x^1999+390877x^1998-91166x^1997+209275x^1996+495327x^1995+131675x^1994-2564166x^1...

result:

ok single line: '-736791x^2000-60050x^1999+3908...7x^3+221500x^2-144211x^1-256519'

Test #7:

score: 10
Accepted
time: 0ms
memory: 1228kb

input:

3 1 2 -1 0 1 -1
1 1 -1

output:

x^4-x^3+x^1

result:

ok single line: 'x^4-x^3+x^1'

Test #8:

score: 10
Accepted
time: 0ms
memory: 1244kb

input:

999 -807 998 73 997 930 996 544 995 -923 994 -440 993 492 992 -987 991 -327 990 840 989 -303 988 -70...

output:

473709x^1998-779642x^1997-605960x^1996+71549x^1995+450635x^1994+467555x^1993+206523x^1992+711044x^19...

result:

ok single line: '473709x^1998-779642x^1997-6059...26x^3-912464x^2+110065x^1+91234'

Test #9:

score: 10
Accepted
time: 3ms
memory: 1240kb

input:

0 -807 1 73 2 930 3 544 4 -923 5 -440 6 492 7 -987 8 -327 9 840 10 -303 11 -709 12 -560 13 99 14 -81...

output:

608478x^1999-492227x^1998+14839x^1997-376616x^1996+211161x^1995+576247x^1994-740738x^1993+457833x^19...

result:

ok single line: '608478x^1999-492227x^1998+1483...9x^3-605960x^2-779642x^1+473709'

Test #10:

score: 10
Accepted
time: 3ms
memory: 1240kb

input:

0 -807 1 73 2 930 3 544 4 -923 5 -440 6 492 7 -987 8 -327 9 840 10 -303 11 -709 12 -560 13 99 14 -81...

output:

-256519x^2000-144211x^1999+221500x^1998-697587x^1997+856787x^1996-713790x^1995-346511x^1994+35098x^1...

result:

ok single line: '-256519x^2000-144211x^1999+221...66x^3+390877x^2-60050x^1-736791'