oj.uz

Submission #1084615

# Submission time Handle Problem Language Result Execution time Memory
1084615 2024-09-06T14:02:04 Z PieArmy Sjeckanje (COCI21_sjeckanje) C++17
110 / 110
 287 ms 44764 KB 
typedef long long ll;
ll pie(ll army){return (1ll<<army);}
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pb push_back
#define endl '\n'
#define mid ((left+right)>>1)
const ll inf=2000000000000000005;
const int sonsuz=2000000005;
using namespace std;
ll fpow(ll x,ll y,ll m=0){if(y<0){cout<<"powError";return -1;}if(m)x%=m;ll res=1;while(y>0){if(y&1)res*=x;x*=x;if(m){x%=m;res%=m;}y>>=1;}return res;}

struct Seg{
	int n;
	vector<ll>arr;
	vector<array<array<ll,2>,2>>mx;
	vector<int>sag,sol;
	void comb(int node,int left,int right){
		sag[node]=sag[node*2+1];
		if(sag[node]==0)sag[node]=sag[node*2];
		sol[node]=sol[node*2];
		if(sol[node]==0)sol[node]=sol[node*2+1];
		for(int i=0;i<2;i++){
			for(int j=0;j<2;j++){
				mx[node][i][j]=0;
				for(int l=0;l<2;l++){
					for(int r=0;r<2;r++){
						if(sol[node*2+1]+sag[node*2]==0&&l&&r){
							continue;
						}
						mx[node][i][j]=max(mx[node][i][j],mx[node*2][i][l]+mx[node*2+1][r][j]);
					}
				}
			}
		}
	}
	void build(int node=1,int left=0,int right=-1){
		if(right==-1)right=n-1;
		if(left==right){
			mx[node][0][0]=mx[node][0][1]=mx[node][1][0]=0;
			mx[node][1][1]=abs(arr[left]);
			if(arr[left]<0)sag[node]=-1;
			if(arr[left]==0)sag[node]=0;
			if(arr[right]>0)sag[node]=1;
			sol[node]=sag[node];
			return;
		}
		build(node*2,left,mid);build(node*2+1,mid+1,right);
		comb(node,left,right);
	}
	Seg(vector<ll>v){
		arr=v;
		n=arr.size();
		mx.resize(n<<2);
		sag.resize(n<<2);
		sol.resize(n<<2);
		build();
	}
	ll tar,x;
	void up(int node=1,int left=0,int right=-1){
		if(right==-1)right=n-1;
		if(left==right){
			arr[left]+=x;
			mx[node][0][0]=mx[node][0][1]=mx[node][1][0]=0;
			mx[node][1][1]=abs(arr[left]);
			if(arr[left]<0)sag[node]=-1;
			if(arr[left]==0)sag[node]=0;
			if(arr[right]>0)sag[node]=1;
			sol[node]=sag[node];
			return;
		}
		if(tar>mid)up(node*2+1,mid+1,right);
		else up(node*2,left,mid);
		comb(node,left,right);
	}
	void update(ll l,ll r){
		tar=l;
		x=r;
		up();
	}
};

int main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	int n,q;cin>>n>>q;
	vector<ll>v;
	ll las;cin>>las;v.pb(0);
	for(int i=1;i<n;i++){
		ll x;cin>>x;
		v.pb(x-las);
		las=x;
	}
	Seg seg(v);
	while(q--){
		int l,r;ll x;
		cin>>l>>r>>x;
		if(l!=1){
			seg.update(l-1,x);
		}
		if(r!=n){
			seg.update(r,-x);
		}
		cout<<seg.mx[1][1][1]<<endl;
	}
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 464 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 464 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 3 ms 1116 KB Output is correct
8 Correct 3 ms 1116 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct
12 Correct 3 ms 1152 KB Output is correct

Subtask #3
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 464 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 3 ms 1116 KB Output is correct
8 Correct 3 ms 1116 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct
12 Correct 3 ms 1152 KB Output is correct
13 Correct 287 ms 43952 KB Output is correct
14 Correct 259 ms 44196 KB Output is correct
15 Correct 279 ms 43992 KB Output is correct
16 Correct 254 ms 44092 KB Output is correct
17 Correct 281 ms 43944 KB Output is correct
18 Correct 237 ms 44764 KB Output is correct