import sys
input = sys.stdin.readline

X=sorted(map(int,input().split()))
A,B,C=X

MIN=[1<<31]*A

for i in range(5000):
    for j in range(5000):
        MIN[(B*i+C*j)%A]=min(MIN[(B*i+C*j)%A],B*i+C*j)

ANS=0
for i in range(A):
    if MIN[i]==1<<31:
        print("INF")
        sys.exit()
    ANS+=MIN[i]//A

print(ANS)