Submission #18997

#	Time	Username	Problem	Language	Result	Execution time	Memory
18997		kriii	제비 (kriii4_W)	C++14	100 / 100	2 ms	1084 KiB

W

#include <stdio.h>

const long long mod = 1000000007;

long long pow(long long a, long long p)
{
	long long r = 1;
	while (p){
		if (p & 1) r = r * a % mod;
		a = a * a % mod;
		p /= 2;
	}
	return r;
}

long long inv(long long a)
{
	return pow(a,mod-2);
}

int main()
{
	int T; scanf ("%d",&T); while (T--){
		long long r,g,b,k;
		scanf ("%lld %lld %lld %lld",&r,&g,&b,&k);

		long long ans = (r + k + k * g % mod * inv(b)) % mod;
		ans = (ans + mod - r * pow(b*inv(b+1)%mod,k) % mod) % mod;
		printf ("%lld\n",ans);
	}

	return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 94 / 94