#include "bits/stdc++.h"
using namespace std;
#define rt return
#define FOR(i,j,k) for(int i=j; i<(int)k;++i)
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define mt make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;

int main(){
    int N, M;
    double ans = 0, p, q, C[20][20] = {};
    cin >> N >> M;
    rep(i, M){
        int u, v, w;
        cin >> u >> v >> w;
        C[u][v] = w*0.01;
    }
    rep(S, 1 << N)if((S & 1) && (S >> (N - 1) & 1)){
        p = 1.0;
        FOR(v, 1, N){
            q = 1.0;
            rep(u, N)if(u != v && (S >> u & 1))q *= (1 - C[u][v]);
            if(S >> v & 1)p *= (1 - q);
            else p *= q;
        }
        ans += p;
    }
    printf("%0.20f\n", ans);
}