func_code_string: #include <bits/stdc++.h>   using namespace std;   inline int read() {     char ch = getchar();     int nega = 1;     while (!isdigit(ch)) {       if (ch ==  - ) nega = -1;       ch = getchar();     }     int ans = 0;     while (isdigit(ch)) {       ans = ans * 10 + ch - 48;       ch = getchar();     }     if (nega == -1) return -ans;     return ans;   }   int add(int x, int y) { return x + y >= 998244353 ? x + y - 998244353 : x + y; }   int sub(int x, int y) { return x - y < 0 ? x - y + 998244353 : x - y; }   int mul(int x, int y) { return 1LL * x * y % 998244353; }   int B = 707;   int n, m, a[500005], b[500005], fa[500005];   int c[500005], d[500005];   struct Query {     int opt, l, r, x, ans;   };   Query q[500005];   int find(int u) { return u == fa[u] ? u : fa[u] = find(fa[u]); }   void merge(int x, int y) {     if (c[y])       fa[c[x]] = c[y];     else {       b[c[x]] = y;       c[y] = c[x];     }     d[y] += d[x];     c[x] = d[x] = 0;   }   signed main() {     cin >> n >> m;     for (int i = 1; i <= n; i++) a[i] = read();     for (int i = 1; i <= m; i++) {       q[i].opt = read(), q[i].l = read(), q[i].r = read(), q[i].x = read();     }     for (int L = 1, R = B; L <= n; L += B, R += B) {       if (R > n) R = n;       if (L > n) break;       int maxn = 0, tag = 0;       for (int k = 1; k <= 500000; k++) {         if (c[k]) c[k] = 0;         if (d[k]) d[k] = 0;       }       for (int k = L; k <= R; k++) {         if (a[k] > maxn) maxn = a[k];         int x = a[k];         if (c[x])           fa[k] = c[x];         else {           c[x] = fa[k] = k;           b[k] = x;         }         d[x]++;       }       for (int j = 1; j <= m; j++) {         int opt = q[j].opt, l = q[j].l, r = q[j].r, x = q[j].x;         if (r < L || l > R) continue;         if (opt == 1) {           if (l <= L && R <= r) {             if (x * 2 <= maxn - tag) {               for (int k = tag + 1; k <= tag + x; k++) {                 if (c[k]) merge(k, k + x);               }               tag += x;             } else {               for (int k = maxn; k > tag + x; k--) {                 if (c[k]) merge(k, k - x);               }               maxn = min(maxn, tag + x);             }           } else {             for (int k = L; k <= R; k++) {               a[k] = b[find(k)];               c[a[k]] = d[a[k]] = 0;               a[k] -= tag;             }             memset(b + L, 0, (R - L + 1) * 4);             tag = 0;             l = max(l, L), r = min(r, R);             for (int k = l; k <= r; k++)               if (a[k] > x) a[k] -= x;             maxn = 0;             for (int k = L; k <= R; k++) {               if (a[k] > maxn) maxn = a[k];               int x = a[k];               if (c[x])                 fa[k] = c[x];               else {                 c[x] = fa[k] = k;                 b[k] = x;               }               d[x]++;             }           }         }         if (opt == 2) {           if (l <= L && R <= r) {             if (x + tag <= 500000) q[j].ans += d[x + tag];           } else {             l = max(l, L), r = min(r, R);             for (int k = l; k <= r; k++) {               if (b[find(k)] == tag + x) q[j].ans++;             }           }         }       }     }     for (int i = 1; i <= m; i++) {       if (q[i].opt == 2) printf( %d n , q[i].ans);     }     return 0;   }   