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P7893 『JROI-3』黑白棋

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R59042842
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Baoshuo Ren 2021-10-03 19:21:46 +08:00 committed by Baoshuo Ren
parent d5696176ac
commit 9317dd1aeb
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
1 changed files with 25 additions and 0 deletions
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25
Luogu/problem/P7893/P7893.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int t;
long long n, p, f, ans;
int main() {
scanf("%d", &t);
while (t--) {
ans = 0;
f = 1;
scanf("%lld%lld", &n, &p);
if (p == 1) {
printf("0\n");
continue;
}
for (long long k = n; k; k /= p) {
ans += f * k;
f = -f;
}
printf("%lld\n", ans);
}
return 0;
}