#include <stdio.h>
#define N 300000
#define N_ (1 << 19) /* N_ = pow2(ceil(log2(N))) */
int max(int a, int b) { return a > b ? a : b; }
int kk[N_ * 2];
long long aap[N_ * 2]; int kkp[N_ * 2];
long long aaq[N_ * 2]; int kkq[N_ * 2];
int kk_[N_ * 2];
int lz[N_];
int h_, n_;
void put(int i, long long x) {
aap[i] += x, aaq[i] += x;
if (i < n_)
lz[i] += x;
}
void pus(int i) {
if (lz[i])
put(i << 1 | 0, lz[i]), put(i << 1 | 1, lz[i]), lz[i] = 0;
}
void pul(int i) {
if (!lz[i]) {
int l = i << 1, r = l | 1;
aap[i] = aap[l], kkp[i] = kkp[l] < kk[l] || aap[l] != aap[r] ? kkp[l] : kk[l] + kkp[r];
aaq[i] = aaq[r], kkq[i] = kkq[r] < kk[r] || aaq[l] != aaq[r] ? kkq[r] : kkq[l] + kk[r];
kk_[i] = max(kk_[l], kk_[r]);
if (aaq[l] == aap[r])
kk_[i] = max(kk_[i], kkq[l] + kkp[r]);
}
}
void push(int i) {
int h;
for (h = h_; h > 0; h--)
pus(i >> h);
}
void pull(int i) {
while (i > 1)
pul(i >>= 1);
}
void build(int *aa, int n) {
int i;
h_ = 0;
while (1 << h_ < n - 1)
h_++;
n_ = 1 << h_;
for (i = 0; i + 1 < n; i++) {
kk[n_ + i] = 1;
aap[n_ + i] = aaq[n_ + i] = aa[i + 1] - aa[i], kkp[n_ + i] = kkq[n_ + i] = kk_[n_ + i] = 1;
}
for (i = n_ - 1; i > 0; i--)
kk[i] = kk[i << 1 | 0] + kk[i << 1 | 1], pul(i);
}
void update(int l, int r, long long x) {
int l_ = l += n_, r_ = r += n_;
push(l_), push(r_);
for ( ; l <= r; l >>= 1, r >>= 1) {
if ((l & 1) == 1)
put(l++, x);
if ((r & 1) == 0)
put(r--, x);
}
pull(l_), pull(r_);
}
int query(int l, int r) {
long long aq, ap;
int kq, kp, k_;
push(l += n_), push(r += n_);
aq = 0, kq = 0, ap = 0, kp = 0, k_ = 0;
for ( ; l <= r; l >>= 1, r >>= 1) {
if ((l & 1) == 1) {
k_ = max(k_, kk_[l]);
if (aq == aap[l])
k_ = max(k_, kq + kkp[l]);
kq = kkq[l] < kk[l] || aq != aaq[l] ? kkq[l] : kq + kkq[l], aq = aaq[l];
l++;
}
if ((r & 1) == 0) {
k_ = max(kk_[r], k_);
if (aaq[r] == ap)
k_ = max(k_, kkq[r] + kp);
kp = kkp[r] < kk[r] || aap[r] != ap ? kkp[r] : kkp[r] + kp, ap = aap[r];
r--;
}
}
if (aq == ap)
k_ = max(k_, kq + kp);
return k_;
}
int main() {
static int aa[N];
int n, q, i;
scanf("%d%d", &n, &q);
for (i = 0; i < n; i++)
scanf("%d", &aa[i]);
build(aa, n);
while (q--) {
int t, l, r, a, b;
scanf("%d%d%d", &t, &l, &r), l--, r--;
if (t == 1) {
scanf("%d%d", &b, &a);
if (l > 0)
update(l - 1, l - 1, b);
if (l < r)
update(l, r - 1, a);
if (r + 1 < n)
update(r, r, -((long long) a * (r - l) + b));
} else if (t == 2) {
} else
printf("%d\n", l == r ? 1 : query(l, r - 1) + 1);
}
return 0;
}
