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#include<bits/stdc++.h>
using namespace std;

int main()
{
    long long t,x,y,a,b;
    cin>>t;
    while(t--)
    {
        cin>>x>>y>>a>>b;
        if(x*y == a+b)
            cout<<"Yes\n";
        else
            cout<<"No\n";
    }
    return 0;
}

n=int(input())
for i in range(n):
    x,y,a,b=map(int,input().split())
    if x*y == a+b:
        print('Yes')
    else:
        print('No')

https://www.hackerearth.com/practice/python/getting-started/numbers/practice-problems/algorithm/binary-sequence-dbaf9d61/

b=input()
a="GCTA";c="CGAU"
try:print(''.join([c[a.index(i)]for i in b]))
except:print("Invalid Input")

https://www.hackerearth.com/practice/python/getting-started/input-and-output/practice-problems/golf/jadoo-and-dna-transcription/editorial/

https://www.hackerearth.com/practice/python/getting-started/input-and-output/practice-problems/golf/jadoo-and-dna-transcription/description/

dna=input()
rna=''
for i in dna:
    if i == 'G':
        rna=rna+'C'
    elif i == 'C':
        rna=rna+'G'
    elif i == 'T':
        rna=rna+'A'
    elif i=='A':
        rna=rna+'U'
    else:  
        print('Invalid Input')
        rna=''
        break
print(rna)

DNA to RNA Conversion

ord() -function to convert char to ascii

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