Submission #18997

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
18997	2016-02-17 02:50:58	kriii	제비 (kriii4_W)	C++14	100 / 100	2 ms	1084 KiB

W

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#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);
  }
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 94 / 94