#include <bits/stdc++.h>

using namespace std;
#define rep(i,n) for(int i=0;i<n;++i)
#define rep1(i,n) for(int i=1;i<=n;++i)
#define rrep(i,n) for(int i=n-1;i>=0;--i)
#define debug(output) if(debugFlag)cout<<#output<<"= "<<output<<"\n";
using lint = long long;
typedef pair<int,int> P;
const bool debugFlag=true;
const lint linf=1.1e18;const int inf=1.01e9;
constexpr int MOD=1000000007;
template<class T>bool chmax(T &a, const T &b) { if(a < b){ a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if(a > b){ a = b; return 1; } return 0; }

#include<atcoder/all>
using namespace atcoder;
using mint = modint;

signed main(){
    lint l,r,m;cin>>l>>r>>m;
    modint::set_mod(m);
    mint res=0;
    vector<mint> kaijo(m+100,0),dp(m+100,0);
    kaijo[0]=1;
    rep1(i,m)kaijo[i]=kaijo[i-1]*i;
    dp[0]=1;
    rep1(i,m)dp[i]=dp[i-1]*kaijo[i];
    for(lint i=l;i<=r;++i){
        if(i>=m)break;
        res+=dp[i];
    }
    cout<<res.val()<<"\n";
    return 0;
}