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lalalalalalalaalalla

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Dec 4th, 2019
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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4. #include <iomanip>
  5. #include <queue>
  6. #include <cmath>
  7. #include <algorithm>
  8. #include <unordered_map>
  9. #include <tuple>
  10. #include <iomanip>
  11. #include <stdio.h>
  12. #include <map>
  13. #include <bitset>
  14. #include <set>
  15. #include <stack>
  16. #include <queue>
  17. #include <unordered_set>
  18. #include <cassert>
  19. #include <stdlib.h>
  20. #include <time.h>
  21. #include <random>
  22.  
  23.  
  24. //#pragma GCC optimize("Ofast,no-stack-protector")
  25. //#pragma GCC target("sse,sse2,sse3,sse3,sse4")
  26. //#pragma GCC optimize("unroll-loops")
  27. //#pragma GCC optimize("fast-math")
  28. //#pragma GCC target("avx2")
  29. //#pragma GCC optimize("section-anchors")
  30. //#pragma GCC optimize("profile-values,profile-reorder-functions,tracer")
  31. //#pragma GCC optimize("vpt")
  32. //#pragma GCC optimize("rename-registers")
  33. //#pragma GCC optimize("move-loop-invariants")
  34. //#pragma GCC optimize("unswitch-loops")
  35. //#pragma GCC optimize("function-sections")
  36. //#pragma GCC optimize("data-sections")
  37.  
  38. //#define int long long
  39. #define ll long long
  40. #define ull unsigned long long
  41. #define all(a) (a).begin(), (a).end()
  42. #define pii pair<int, int>
  43. #define pb push_back
  44. #define ld long double
  45.  
  46.  
  47. using namespace std;
  48.  
  49. //const int INF = 1e17;
  50. //const int mod = 2600000069;
  51. //const int p = 179;
  52. const int MAXN = 1e5 + 1;
  53. int sq;
  54.  
  55. int n, m;
  56. int a[MAXN], cnt[MAXN], lst[MAXN];
  57.  
  58. void update(int v, int k) {
  59. v--;
  60. a[v] = k;
  61. while (v % sq != 0) {
  62. if (a[v] + v < (v + 1) * sq) {
  63. cnt[v] = cnt[v + a[v]] + 1;
  64. lst[v] = lst[v + a[v]];
  65. if (lst[v + a[v]] == v + a[v]) cnt[v]--;
  66. } else {
  67. cnt[v] = 1;
  68. lst[v] = v;
  69. }
  70. v--;
  71. }
  72. if (a[v] + v < (v + 1) * sq) {
  73. cnt[v] = cnt[v + a[v]] + 1;
  74. lst[v] = lst[v + a[v]];
  75. } else {
  76. cnt[v] = 1;
  77. lst[v] = v;
  78. }
  79. }
  80.  
  81. void ask(int v) {
  82. v--;
  83. int ans = 0;
  84. while (v < n) {
  85. ans += cnt[v];
  86. if (v == lst[v] && v + a[v] < n) v += a[v];
  87. else if (v != lst[v]) v = lst[v];
  88. else break;
  89. }
  90. cout << v + 1 << " " << ans << "\n";
  91. }
  92.  
  93. signed main() {
  94. ios_base::sync_with_stdio(0);
  95. cin.tie(0);
  96. cout.tie(0);
  97. cin >> n >> m;
  98. sq = sqrt(n) + 1;
  99. for (int i = 0; i < n; i++) {
  100. cin >> a[i];
  101. lst[i] = i;
  102. }
  103. for (int i = n - 1; i >= 0; i--) {
  104. if (a[i] + i < min((i/sq + 1) * sq, n)) {
  105. cnt[i] = cnt[i + a[i]] + 1;
  106. lst[i] = lst[i + a[i]];
  107. if (lst[i + a[i]] == i + a[i]) cnt[i]--;
  108. } else {
  109. cnt[i] = 1;
  110. lst[i] = i;
  111. }
  112. }
  113. // for (auto k : lst) cout << k << " ";
  114. // cout << "\n";
  115. // for (auto k : cnt) cout << k << " ";
  116. // cout << "\n";
  117. int t, ind, val;
  118. for (int i = 0; i < m; i++) {
  119. cin >> t;
  120. if (t == 0) {
  121. cin >> ind >> val;
  122. update(ind, val);
  123. } else {
  124. cin >> ind;
  125. ask(ind);
  126. }
  127. }
  128. }
  129. /*
  130.  
  131. */
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