Submission #864362

#TimeUsernameProblemLanguageResultExecution timeMemory
864362anhphantMonkey and Apple-trees (IZhO12_apple)C++14
0 / 100
285 ms262144 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define endl '\n' ll M; struct DYNAMIC_SEGMENT_TREE { struct Node { ll L, R, sum, lazy, ls, rs; }; vector<Node> ST; DYNAMIC_SEGMENT_TREE() { ST = {{1, ll(1e9), 0, 0, -1, -1}}; } void f(ll id) { ST[id].sum = ST[id].R - ST[id].L + 1; ST[id].lazy = 1; } void push_down(ll id) { ll MID = (ST[id].L + ST[id].R) / 2; if (ST[id].ls == -1) { ST[id].ls = ST.size(); ST.push_back({ST[id].L, MID, 0, 0, -1, -1}); } if (ST[id].rs == -1) { ST[id].rs = ST.size(); ST.push_back({MID + 1, ST[id].R, 0, 0, -1, -1}); } if (ST[id].lazy == 0) return; f(ST[id].ls); f(ST[id].rs); ST[id].lazy = 0; } void push_up(ll id) { ll MID = (ST[id].L + ST[id].R) / 2; if (ST[id].ls == -1) { ST[id].ls = ST.size(); ST.push_back({ST[id].L, MID, 0, 0, -1, -1}); } if (ST[id].rs == -1) { ST[id].rs = ST.size(); ST.push_back({MID + 1, ST[id].R, 0, 0, -1, -1}); } ST[id].sum = ST[ST[id].ls].sum + ST[ST[id].rs].sum; } void update(ll id, ll L, ll R) { if (ST[id].R < L || R < ST[id].L) return; //cerr << "update : " << id << " " << ST[id].L << " " << ST[id].R << endl; if (L <= ST[id].L && ST[id].R <= R) { f(id); return; } push_down(id); update(ST[id].ls, L, R); update(ST[id].rs, L, R); push_up(id); } ll getans(ll id, ll L, ll R) { if (ST[id].R < L || R < ST[id].L) return 0; if (L <= ST[id].L && ST[id].R <= R) return ST[id].sum; push_down(id); return getans(ST[id].ls, L, R) + getans(ST[id].rs, L, R); } void debug() { for(int i = 0; i < ST.size(); ++i) { cerr << "i = " << i << " : " << ST[i].L << " " << ST[i].R << " " << ST[i].sum << " " << ST[i].lazy << " " << ST[i].ls << " " << ST[i].rs << endl; } } }; int main() { ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0); cerr.tie(0); if (fopen("FILE.INP", "r")) { freopen("FILE.INP", "r", stdin); freopen("FILE.OUT", "w", stdout); } cin >> M; DYNAMIC_SEGMENT_TREE St; ll C = 0; for(int _ = 1; _ <= M; ++_) { ll D, L, R; cin >> D >> L >> R; if (D == 2) { St.update(0, L + C, R + C); } else { C = St.getans(0, L + C, R + C); cout << C << endl; } //cerr << "query " << _ << endl; //St.debug(); //cerr << endl; } }

Compilation message (stderr)

apple.cpp: In member function 'void DYNAMIC_SEGMENT_TREE::debug()':
apple.cpp:75:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<DYNAMIC_SEGMENT_TREE::Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for(int i = 0; i < ST.size(); ++i) {
      |                        ~~^~~~~~~~~~~
apple.cpp: In function 'int main()':
apple.cpp:86:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |         freopen("FILE.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
apple.cpp:87:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |         freopen("FILE.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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