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重返oj之string真好用(高精×低精)
- 2024-8-20 15:02:38 @
string cheng(string a, int b)
{
string c;
long long la = a.size();
long long t = 0;
for(long long i = 0; i < la; i++)
{
t += (a[la-1-i] - '0') * b;
c += t % 10 + '0';
t /= 10;
}
while(t)
{
c += t % 10 + '0';
t /= 10;
}
while (c.size() > 1 && c.back() == '0')
c.pop_back();
reverse(c.begin(), c.end());
return c;
}
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