Submission #1129158

#	Time	Username	Problem	Language	Result	Execution time	Memory
1129158		FanOfWilliamLin	Monkey and Apple-trees (IZhO12_apple)	C++20	0 / 100	2 ms	320 KiB

apple

#include <bits/stdc++.h>
using namespace std;
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template <class T> using oset=tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//- insert(x),erase(x)
//- find_by_order(k): return iterator to the k-th smallest element
//- order_of_key(x): the number of elements that are strictly smaller

#define ll long long
#define ld long double
#define ar array
#define vt vector
#define pb push_back
#define bit(i, x) ((x>>i)&1ULL)
#define pf push_front
#define all(v) v.begin(), v.end()
#define lla(v) v.rbegin(), v.rend()
#define pii pair<int, int>
#define x first
#define y second

/*mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll get_rand(ll l, ll r) {
    return uniform_int_distribution<ll> (l, r)(rng); 
}*/

struct SparseSegtree {
	struct Node {
		int freq=0;
		int lazy=0;
		int left=-1;
		int right=-1;
	};
	vector<Node> st;
	int n, q, timer=1;
	void init(int _n, int _q=0) {
		n=_n;
		q=_q;
		if(q>0) { 
			st.reserve(2*q*__lg(n)); 
		}
		st.pb(Node());
		st.pb(Node());
	}	
	int combine(int a, int b) { 
		return a+b; 
	}
	void apply(int id, int len, int val) {
		if(val==1) {
			st[id].lazy=val;
			st[id].freq=len*val;
		}
	}
	void psh(int id, int l, int r) {
		if(st[id].left==-1) {
			st[id].left=++timer;
			st.push_back(Node());
		}
		if(st[id].right==-1) {
			st[id].right=++timer;
			st.push_back(Node());
		}
		int mid=(l+r)/2;
		apply(st[id].left, mid-l+1, st[id].lazy);
		apply(st[id].right, r-mid, st[id].lazy);
		st[id].lazy=0;
	}
	void range_set(int id, int l, int r, int u, int v, int val) {
		if(v<l||u>r) { 
			return; 
		}
		if(u<=l&&r<=v) {
			apply(id, r-l+1, val);
			return;
		} 
		psh(id, l, r);
		int mid=(l+r)/2;
		range_set(st[id].left, l, mid, u, v, val);
		range_set(st[id].right, mid+1, r, u, v, val);
		st[id].freq=combine(st[st[id].left].freq, st[st[id].right].freq);
	}
	int range_sum(int id, int l, int r, int u, int v) {
		if(v<l||u>r) { 
			return 0; 
		}
		if(u<=l&&r<=v) { 
			return st[id].freq; 
		}
		psh(id, l, r);
		int mid=(l+r)/2;
		return combine(range_sum(st[id].left, l, mid, u, v), range_sum(st[id].right, mid+1, r, u, v));
	}
	void range_set(int ql, int qr, int val) { range_set(1, 1, n, ql, qr, val); }
	int range_sum(int ql, int qr) { return range_sum(1, 1, n, ql, qr); }
} st;

void solve() {
	int query_num;
	cin >> query_num;
	const int RANGE_SIZE = 1e9;

	st.init(RANGE_SIZE+1, query_num);

	int c = 0;
	for (int i = 0; i < query_num; i++) {
		int type, x, y;
		cin >> type >> x >> y;
		if (type == 1) {
			c = st.range_sum(x+c, y+c);
			cout << c << '\n';
		} else if (type == 2) {
			st.range_set(x+c, y+c, 1);
		}
	}
}
 
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
 
	freopen("f.in", "r", stdin);
  freopen("f.out", "w", stdout);	

	int TC=1;
	//cin >> TC;
	while(TC--) {
		solve();
	}
}

Compilation message (stderr)

apple.cpp: In function 'int main()':
apple.cpp:125:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |         freopen("f.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
apple.cpp:126:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |   freopen("f.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100