#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

int main()
{
    int n, m;
    cin >> n >> m;
    vector<int> a(m), b(m);
    vector<double> c(m);
    for(int i=0; i<m; ++i){
        cin >> a[i] >> b[i] >> c[i];
        c[i] /= 100.0;
    }

    double ans = 0.0;
    for(int i=0; i<(1<<n); ++i){
        bitset<20> bs(i);
        if(!bs[0] || !bs[n-1])
            continue;

        vector<double> p(n, 1.0);
        for(int j=0; j<m; ++j){
            if(bs[a[j]])
                p[b[j]] *= 1 - c[j];
        }

        double x = 1.0;
        for(int i=1; i<n; ++i){
            if(bs[i])
                x *= 1 - p[i];
            else
                x *= p[i];
        }
        ans += x;
    }
    printf("%.10f\n", ans);

    return 0;
}