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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. // * No One Dies a Virgin, Life Fucks Us All
  4. typedef long long ll;
  5. #define nl '\n'
  6. #define ff first
  7. #define ss second
  8. #define pb push_back
  9. #define sik(x) {cout << x << nl; return;}
  10. constexpr ll maxn = 1e6+10, mod = 1e9 + 7, inf = 1e10, SQ = 450, P = 6065621, maxlg = 20;
  11. typedef pair<ll, ll> pii;
  12.  
  13. ll n, q, a[maxn], seg[maxn << 2];
  14.  
  15. void build(ll l = 1, ll r = n+1, ll id = 1) {
  16.   if (r - l <= 1) {
  17.     seg[id] = inf;
  18.     return;
  19.   }
  20.   ll mid = (l + r) >> 1, lc = id << 1, rc = lc | 1;
  21.   build(l, mid, lc);
  22.   build(mid, r, rc);
  23.   seg[id] = inf;
  24. }
  25.  
  26. void update(ll ql, ll qr, ll v, ll l = 1, ll r = n+1, ll id = 1) {
  27.   if (qr <= l || r <= ql) return;
  28.   if (ql <= l && r <= qr) {
  29.     seg[id] = min(seg[id], v);
  30.     return;
  31.   }
  32.   ll mid = (l + r) >> 1, lc = id << 1, rc = lc | 1;
  33.   update(ql, qr, v, l, mid, lc);
  34.   update(ql, qr, v, mid, r, rc);
  35. }
  36.  
  37. ll get(ll ql, ll l = 1, ll r = n+1, ll id = 1) {
  38.   if (r - l <= 1) return seg[id];
  39.  
  40.   ll mid = (l + r) >> 1, lc = id << 1, rc = lc | 1;
  41.   if (ql < mid) return min(seg[id], get(ql, l, mid, lc));
  42.   else return min(seg[id], get(ql, mid, r, rc));
  43. }
  44.  
  45. int32_t main() {
  46.   cin.tie(0)->sync_with_stdio(0); 
  47.   cin >> n >> q;
  48.   for (int i = 1 ; i <= n ; i ++) cin >> a[i];
  49.   build();
  50.  
  51.   for (ll t, l, r, x ; q -- ; ) {
  52.     cin >> t;
  53.     if (t == 1) {
  54.       cin >> l >> r >> x, r ++;
  55.       update(l, r, x);
  56.     } else {
  57.       cin >> x;
  58.       cout << "-- " << min(a[x], get(x)) << nl;
  59.     }
  60.   }
  61.   cout << nl;
  62. }
Success #stdin #stdout 0s 5644KB
comments (?)
stdin 
5 7
1 2 3 4 5
2 2
1 2 4 3
2 2
2 3
2 4
1 3 5 1
2 5
stdout 
-- 2
-- 2
-- 3
-- 3
-- 1
https://ideone.com/AiVgrL
language:
C++14 (gcc 8.3)
created:
126 days ago
visibility:
public

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