#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};
constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

int main() {
  int a, b, c; cin >> a >> b >> c;
  if (gcd(gcd(a, b), c) > 1) {
    cout << "INF\n";
    return 0;
  }
  if (a > b) swap(a, b);
  if (b > c) swap(b, c);
  if (a > b) swap(a, b);
  int n = a * b - a - b;  // https://ameblo.jp/knife1968/entry-12590944693.html
  if (n <= 0) {
    cout << 0 << '\n';
    return 0;
  }
  vector<bool> dp(n + 1, false);
  dp[0] = true;
  for (int i = 0; i <= n; ++i) {
    if (dp[i]) {
      if (i + a <= n) dp[i + a] = true;
      if (i + b <= n) dp[i + b] = true;
      if (i + c <= n) dp[i + c] = true;
    }
  }
  cout << count(ALL(dp), false) << '\n';
  return 0;
}