#include<cstdio>
struct Element{
    int a,b;
    int c;
};
long long f[305][305][305];
Element e[305];
const long long mod = 1e9+7;

int main(){
    int n,m,k;
    scanf("%d%d%d",&n,&m,&k);
    for(int i = 1; i <= m; i++){
        int p,q,c;
        scanf("%d%d%d",&p,&q,&c);
        e[i].a = p, e[i].b = q, e[i].c = c;
        f[2][q][c] = (f[2][q][c]+1)%mod;
    }
    for(int i = 2; i <= n-1; i++){
        for(int j = 0; j <= k; j++){
            for(int t = 1; t <= m; t++){
                int nextK = j+e[t].c;
                if(nextK<=k){ 
                    //printf("from %d %d %d to %d %d %d\n",i,e[t].a,j,i+1,e[t].b,nextK);
                    f[i+1][e[t].b][nextK] += f[i][e[t].a][j];
                    if(f[i+1][e[t].b][nextK]>=mod) f[i+1][e[t].b][nextK] -= mod;
                }
            }
        }
    }
    long long ans = 0;
    for(int i = 1; i <= 300; i++) ans = (ans+f[n][i][k])%mod;
    printf("%lld\n",ans);
    return 0;
}