oj.uz

답안 #939806

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
939806 2024-03-06T19:08:01 Z Litusiano Progression (NOI20_progression) C++17
48 / 100
 893 ms 98404 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
const int INF = 1e15;
struct Node{
	pair<int,int> mxl = {-INF,INF}; // tot, val
	pair<int,int> mxr = {-INF,INF}; // tot, val
	pair<int,int> tot = {-INF,INF}; // tot, val
	int sz = 1;
	int sum = 0;
};	

struct SegTree{
	int n;
	vector<Node> seg; //mxl, 	
	vector<pair<bool,int>> lazy; // 0 add, 1 set

	Node merge(Node idx, Node idx1){
		Node ans;
		ans.sz = idx.sz + idx1.sz;
		ans.sum = idx.sum + idx1.sum;
		// if(idx.mxl.first == -INF && idx1.mxl.first == -INF) return ans; // both are null nodes
		// if(idx1.mxl.first == -INF) return idx; // just second is a null node
		// if(idx.mxl.first == -INF) return idx1;
		ans.mxl = idx.mxl;
		pair<int,int> templeft = idx.mxl; //idx ALWAYS IN THE LEFT 
		if(idx.mxl.first == idx.sz){
			if(idx1.mxl.second == idx.mxl.second) templeft = {idx.sz + idx1.mxl.first, idx1.mxl.second};// join both lefts
			else templeft = idx.mxl;
		}
		ans.mxl = max(ans.mxl, templeft); // take max
		// repeat for right
		ans.mxr = idx1.mxr;
		pair<int,int> tempright = idx1.mxr; 
		if(idx1.mxr.first == idx1.sz){
			if(idx1.mxr.second == idx.mxr.second) tempright = {idx1.sz + idx.mxr.first, idx.mxr.second};// join both lefts
			else tempright = idx1.mxr;
		}
		ans.mxr = max(ans.mxr, tempright); // take max

		// TAKE TOTAL
		ans.tot = max(ans.mxl, ans.mxr); 
		ans.tot = max(idx.tot,idx1.tot);
		// JOIN THE MIDDLE, idx right and idx1 left
		pair<int,int> temptot = ans.tot;
		if(idx.mxr.second == idx1.mxl.second){
			temptot = {idx.mxr.first + idx1.mxl.first, idx.mxr.second};
		}
		ans.tot = max(ans.tot, temptot);
		return ans;
	}

	void build(vector<int> v){
		int n1 = v.size();
		n = 1;
		while(n < n1){
			n*=2; 
		}
		Node tmpn;
		// cerr<<endl;
		seg.assign(2*n, tmpn); lazy.assign(2*n, {0,0});
		for(int i = 0; i<n1; i++){
			// cerr<<v[i]<<" ";
			seg[i+n].mxl = seg[i+n].mxr = seg[i+n].tot = {1,v[i]};
			seg[i+n].sz = 1;
			seg[i+n].sum = v[i];
		}
		// cerr<<endl;
		for(int i = n-1; i>=1; i--){
			// cout<<"BUILDING Seg "<<i<<" from seg 2*i = "<<seg[2*i].tot.first<<" "<<seg[2*i].tot.second<<" and seg 2*i+1 "<<seg[2*i+1].tot.first<<" "<<seg[2*i+1].tot.second<<endl;
			seg[i] = merge(seg[2*i], seg[2*i+1]);
		}
	}
	void add(int idx, int v, int l, int r){
		seg[idx].sum += v * (r-l+1);
		lazy[idx].second += v;
		seg[idx].mxl.second += v;
		seg[idx].mxr.second += v;
		seg[idx].tot.second += v;
	}
	void set(int idx, int v, int l, int r){
		seg[idx].sum = (r-l+1) * v;
		lazy[idx].first = 1;
		lazy[idx].second = v;
		seg[idx].mxl.second = v;
		seg[idx].mxl.first = (r-l+1)/2; // bad for when updating from update and not from push down
		seg[idx].mxr.second = v;
		seg[idx].mxr.first = (r-l+1)/2;
		seg[idx].tot.second = v;
		seg[idx].tot.first = (r-l+1)/2;
	}
	void PushDown(int k, int l, int r){
		if(lazy[k].first == 0){
			//add
			if(lazy[2*k].first == 1) lazy[2*k] = {0,0};
			add(2*k, lazy[k].second, l,r);
			if(lazy[2*k+1].first == 1) lazy[2*k+1] = {0,0};
			add(2*k+1,lazy[k].second, l, r);
		}
		else{
			//set
			set(2*k, lazy[k].second, l, r);
		}
		lazy[k] = {0,0};
	}
	Node query(int ql, int qr, int k, int l, int r){
		if(ql <= l && r <= qr) return seg[k];
		if(l > qr || r < ql){
			Node tmp;
			return tmp;
		}
		PushDown(k,l,r);
		int m = (l+r)/2;
		Node x = query(ql,qr,2*k,l,m);
		Node y = query(ql,qr,2*k+1,m+1,r);
		return merge(x,y);
	}
	int query(int ql, int qr){
		Node x = query(ql,qr,1,0,n-1);
		// cout<<"X "<<ql<<" "<<qr<<" "<<x.tot.first<<" "<<x.tot.second<<endl;
		return x.tot.first;
	}
	void update(int ql, int qr, int tp, int v, int k, int l, int r){
		if(ql <= l && r <= qr){
			if(tp == 0){
				// add				
				if(lazy[k].first == 1) lazy[k] = {0,0};
				add(k,v,l,r);
				return;
			}
			else{
				set(k,v,l,r);
				return;
			}
		}
		if(l > qr || r < ql) return;
		PushDown(k,l,r);
		int m = (l+r)/2;
		update(ql,qr,tp,v, 2*k,l,m);
		update(ql,qr,tp,v, 2*k+1, m+1,r);
		seg[k] = merge(seg[2*k], seg[2*k+1]);
	}
	void update(int ql, int qr, int tp, int v){
		if(ql > qr) return;
		update(ql,qr,tp,v,1, 0,n-1);
	}
	int sum(int ql, int qr){
		return query(ql,qr,1,0,n-1).sum;
	}
};

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n,q; cin>>n>>q;
	vector<int> v(n); for(int& i : v) cin>>i;
	vector<int> dif;
	for(int i = 1; i<n; i++) dif.push_back(v[i-1] - v[i]);
	SegTree seg; seg.build(dif);
	int val = v[0];
	while(q--){
		int tp; cin>>tp;
		if(tp == 1){
			//add
			int l,r; cin>>l>>r; l--; r--;
			int s,c; cin>>s>>c;
			// cout<<"BEFORE UPDATE: ";
			// for(int i = 0; i<n-1; i++){
			// 	cout<<seg.query(i,i)<<" ";
			// }
			// cout<<endl;
			if(l == 0) v[0] += s;
			seg.update(l,r-1,0,-c);
			seg.update(r,r,0,s + (r-l)*c);
			if(l) seg.update(l-1,l-1,0,-s);
			// cout<<"AFTER UPDATE: ";
			// for(int i = 0; i<n-1; i++){
			// 	cout<<seg.query(i,i)<<" ";
			// }
			// cout<<endl;
		}
		else if(tp == 2){
			int l,r; cin>>l>>r; int s,c; cin>>s>>c;
			// seg.update(l,r-1,1,c); // set differences
			int sum = v[0];
			
			if(l) sum+=seg.sum(0,l-1);
			int val = s + (r-l)*s;
			int sum1 = v[0];
			if(r) sum1+=seg.sum(0,r-1);
			if(l == 0) v[0] = s;
			if(l) seg.update(l-1, l-1, 0, s-sum);
			seg.update(r,r,0, val-sum1);
			seg.update(l,r-1,1,c);
		}
		else{
			int l,r; cin>>l>>r; l--; r--;
			if(l == r){
				cout<<1<<endl; continue;
			}
			// cerr<<endl<<l<<" "<<r-1<<endl;
			cout<<seg.query(l,r-1)+1<<endl;
		}
	}
}

Compilation message

Progression.cpp: In function 'int main()':
Progression.cpp:161:6: warning: unused variable 'val' [-Wunused-variable]
  161 |  int val = v[0];
      |      ^~~

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 463 ms 89544 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 352 ms 90820 KB Output is correct
2 Correct 89 ms 852 KB Output is correct
3 Correct 86 ms 1024 KB Output is correct
4 Correct 69 ms 852 KB Output is correct
5 Correct 82 ms 1108 KB Output is correct
6 Correct 84 ms 1104 KB Output is correct
7 Correct 84 ms 1036 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 348 ms 90320 KB Output is correct
12 Correct 354 ms 89800 KB Output is correct
13 Correct 355 ms 90012 KB Output is correct
14 Correct 328 ms 89544 KB Output is correct
15 Correct 361 ms 90056 KB Output is correct
16 Correct 332 ms 90224 KB Output is correct
17 Correct 349 ms 91220 KB Output is correct
18 Correct 359 ms 90820 KB Output is correct
19 Correct 316 ms 91332 KB Output is correct
20 Correct 292 ms 90284 KB Output is correct
21 Correct 312 ms 90824 KB Output is correct

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 701 ms 90344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 352 ms 90820 KB Output is correct
2 Correct 89 ms 852 KB Output is correct
3 Correct 86 ms 1024 KB Output is correct
4 Correct 69 ms 852 KB Output is correct
5 Correct 82 ms 1108 KB Output is correct
6 Correct 84 ms 1104 KB Output is correct
7 Correct 84 ms 1036 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 348 ms 90320 KB Output is correct
12 Correct 354 ms 89800 KB Output is correct
13 Correct 355 ms 90012 KB Output is correct
14 Correct 328 ms 89544 KB Output is correct
15 Correct 361 ms 90056 KB Output is correct
16 Correct 332 ms 90224 KB Output is correct
17 Correct 349 ms 91220 KB Output is correct
18 Correct 359 ms 90820 KB Output is correct
19 Correct 316 ms 91332 KB Output is correct
20 Correct 292 ms 90284 KB Output is correct
21 Correct 312 ms 90824 KB Output is correct
22 Correct 762 ms 90476 KB Output is correct
23 Correct 147 ms 1028 KB Output is correct
24 Correct 138 ms 3664 KB Output is correct
25 Correct 137 ms 3544 KB Output is correct
26 Correct 144 ms 3844 KB Output is correct
27 Correct 141 ms 3664 KB Output is correct
28 Correct 143 ms 3668 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 794 ms 94148 KB Output is correct
33 Correct 777 ms 96724 KB Output is correct
34 Correct 779 ms 94792 KB Output is correct
35 Correct 888 ms 93844 KB Output is correct
36 Correct 647 ms 95136 KB Output is correct
37 Correct 664 ms 94164 KB Output is correct
38 Correct 651 ms 93980 KB Output is correct
39 Correct 775 ms 98404 KB Output is correct
40 Correct 816 ms 98388 KB Output is correct
41 Correct 893 ms 96908 KB Output is correct
42 Correct 821 ms 97096 KB Output is correct
43 Correct 772 ms 96732 KB Output is correct
44 Correct 780 ms 96660 KB Output is correct
45 Correct 782 ms 97940 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 463 ms 89544 KB Output isn't correct
2 Halted 0 ms 0 KB -