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#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
//mt19937 mrand(random_device{}()); 
const ll mod=1000000007;
const ll mod2=1000000007*2;
//int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=301000;
int n,q,m;
bitset<1000> blk[N];
ll lev[N],sz[N],dis[N],ans[N];
vector<array<int,3>> que[N];
int a[N],ev[N];
int dd[N*2],pool1[N*2],pool2[N*2],*d=pool1+N,*rd=pool2+N;
int ps1[N*2],ps2[N*2],ps3[N*2],ps4[N*2];
int *s00=ps1+N,*s01=ps2+N,*s10=ps3+N,*s11=ps4+N;
int lab[N],lenb[N],rk[N],cc[N];
int main() {
	scanf("%d%d",&n,&q);
	lev[0]=1;
	ll tot=1;
	for (int i=1;i<=n-1;i++) {
		scanf("%d",a+i);
		lev[i]=lev[i-1]*a[i]%mod2;
		tot=(tot+lev[i])%mod2;
	}
	int nev=n;
	ev[n+1]=ev[n]=n;
	for (int i=n-1;i>=0;i--) {
		if (a[i]%2==0) nev=i;
		ev[i]=nev;
	}
	sz[n-1]=1;
	per(i,0,n-1) sz[i]=(sz[i+1]*a[i+1]+1)%mod2;
	rep(i,1,n) dis[0]=(dis[0]+i*lev[i])%mod2;
	rep(i,1,n) dis[i]=(dis[i-1]-sz[i]+tot-sz[i])%mod2;
	rep(i,0,q) {
		int u,v,w;
		scanf("%d%d%d",&u,&v,&w);
		que[w].pb({u,v,i});
		ans[i]=(dis[u-1]-(dis[u-1]+dis[v-1]-(tot%2)*(u-w+v-w-2))%mod2/2)%mod;
	}
	rep(i,1,n) {
		if (a[i]%2==0) lab[i]=++m;
		lenb[m]++;
	}
	lab[n]=m+1;
	set<int> dlen;
	rep(i,1,m+1) dlen.insert(lenb[i]);
	int mm=0;
	memset(rk,-1,sizeof(rk));
	for (auto x:dlen) {
		rk[x]=mm;
		cc[mm]=x;
		mm++;
	}
	assert(mm<=1000);
	rep(i,1,n) if (a[i]%2==0) {
		blk[lab[i]]=blk[lab[i]-1];
		assert(rk[lenb[lab[i]]]!=-1);
		blk[lab[i]].flip(rk[lenb[lab[i]]]);
	}
	per(i,0,n) {
		s00[i]=s00[i+1];
		s01[i]=s10[i+1];
		s10[i]=s01[i+1]+1;
		s11[i]=s11[i+1]+1;
	}
	for (int w=1;w<=n;w++) {
		int dd2=w-1+n-1;
		--d; --rd; --s00; --s01; --s10; --s11;
		rd[0]=rd[1];
		s00[0]=s00[1]+rd[0];
		s01[0]=s10[1]+rd[0];
		s10[0]=s01[1]+(rd[0]^1);
		s11[0]=s11[1]+(rd[0]^1);
		if (a[w]%2==0) {
			for (int i=1;i<=lenb[lab[w]];i++) d[i]^=1;
			for (int i=lenb[lab[w]];i>=0;i--) {
				rd[i]=rd[i+1]^d[i];
				s00[i]=s00[i+1]+rd[i];
				s01[i]=s10[i+1]+rd[i];
				s10[i]=s01[i+1]+(rd[i]^1);
				s11[i]=s11[i+1]+(rd[i]^1);
			}
		}
		for (auto q:que[w]) {
			int u=q[0],v=q[1];
			if (u>v) swap(u,v);
			auto mblk=blk[lab[ev[v+1]]-1]^blk[lab[ev[u+1]]-1];
			VI plen,qlen;
			rep(i,0,mm) if (mblk[i]) plen.pb(cc[i]);
			qlen.pb(ev[u+1]-u);
			qlen.pb(ev[v+1]-v);
			qlen.pb(ev[w+1]-w);
			qlen.pb(w-1);
			sort(all(qlen));
			while (!qlen.empty()&&qlen[0]==0) qlen.erase(qlen.begin());
			VI mlen(SZ(plen)+SZ(qlen));
			merge(all(plen),all(qlen),mlen.begin());
			for (int i=0;i+1<mlen.size();i++) 
				if (mlen[i]==mlen[i+1]) {
					mlen.erase(mlen.begin()+i);
					mlen.erase(mlen.begin()+i);
					i-=1;
				}
			reverse(all(mlen));
			mlen.pb(0);
			int pre=dd2,cc=0,rans=0;
			auto count=[&](int type,int r,int l) {
				if (type==0) {
					if (cc==0) rans+=s00[l]-s00[r+1];
					else rans+=s11[l]-s11[r+1];
				} else {
					if (cc==0) rans-=s01[r+1];
					else rans-=s10[r+1];
					cc=(cc+r-l+1)%2;
					if (cc==0) rans+=s01[l];
					else rans+=s10[l];
				}
			};
			rep(i,0,SZ(mlen)) {
				count(i%2,pre,mlen[i]+1);
				pre=mlen[i];
			}
			rans+=(cc+u-w+v-w+1+rd[0])%2;
			ans[q[2]]=(ans[q[2]]+rans)%mod;
		}
	}
	rep(i,0,q) {
		if (ans[i]<0) ans[i]+=mod;
		printf("%lld\n",ans[i]);
	}
}