Submission #863801

#	Time	Username	Problem	Language	Result	Execution time	Memory
863801		shadow_sami	Sjeckanje (COCI21_sjeckanje)	C++17	110 / 110	599 ms	61696 KiB

Main

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef vector<ll> vi;
typedef vector<vector<ll>> vvi;
typedef pair<ll,ll> pi;
typedef map<ll,ll> mi;
typedef long double ld;
typedef vector<ld> vd;
typedef vector<vector<ld>> vvd;
typedef pair<ld,ld> pd;
#define ff first
#define ss second
#define srt(a) sort(a.begin(),a.end());
#define fip(k, n) for (ll i = k; i < n; i++)
#define fjp(k, n) for (ll j = k; j < n; j++)
#define fin(k, n) for (ll i = k; i >= n; i--)
#define fjn(k, n) for (ll j = k; j >= n; j--)
#define fp(k, n, m) for (ll k = n; k < m; k++)
#define fn(k, n, m) for (ll k = n; k >= m; k--)
#define ordered_set tree<pi, null_type,less< pi >, rb_tree_tag,tree_order_statistics_node_update>
#define totalOne(n) __builtin_popcount(n)
#define backZero(n) __builtin_ctzll(n)
#define frontZero(n) __builtin_clzll(n)
#define fx(k) for ( auto x : k )
#define test ll t;cin >> t;while (t--)
#define nli "\n"

// ==========================(debug)============================================================================================== //

#ifndef ONLINE_JUDGE
#define debug(x) cerr << #x <<" "; _printn(x); cerr << nli;
#else
#define debug(x)
#endif

void _printn(ll x){ cerr<<x<<" "; }
void _printn(int x){ cerr<<x<<" "; }
void _printn(ld x){ cerr<<x<<" "; }
void _printn(double x){ cerr<<x<<" "; }
void _printn(string x){ cerr<<x<<" "; }
void _printn(char x){ cerr<<x<<" "; }
void _printn(bool x){ cerr<<x<<" "; }
template<class T,class V>void _printn(pair<T,V> vv);
template<class T> void _printn(vector<T> vv);
template<class T> void _printn(set<T> vv);
template<class T,class V> void _printn(map<T,V> vv);
template<class T> void _printn(multiset<T> vv);
template<class T,class V>void _printn(pair<T,V> vv){ cerr<<"( ";_printn(vv.ff);cerr<<",";_printn(vv.ss);cerr<<")";}
template<class T> void _printn(vector<T> vv){ cerr<<"[ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"]"; };
template<class T> void _printn(set<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T> void _printn(multiset<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T,class V> void _printn(map<T,V> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };

// ==========================(debug)============================================================================================== //

ll n,m,tp,tp2,res,cnt,sum,tptp,ans;
const ll mx = 5e5+5;
const ll mod = 1e9+7;

// ==========================(MOD)=============================================================================================== //

ll mod_add(ll aa,ll bb){ return ((aa%mod)+(bb%mod))%mod; }
ll mod_minus(ll aa,ll bb){ return (((aa%mod)-(bb%mod))+10*mod)%mod; }
ll mod_mul(ll aa,ll bb){ return ((aa%mod)*(bb%mod))%mod; }
ll mod_power(ll aa,ll bb){ aa%=mod; ll empowered = 1; bb%=mod-1; while(bb > 0){ if(bb & 1) empowered = mod_mul(empowered,aa); bb = bb >> 1; aa = mod_mul(aa,aa); } return empowered; }
ll mod_divi(ll aa,ll bb){ aa=mod_mul(aa,mod_power(bb,mod-2)); return aa; }

// ==========================(MOD)=============================================================================================== //

bool f = false;
ll a[mx];

typedef struct NODE{
	ll v[2][2];
	ll b[2];
}node;

node merge(node aa,node bb){
	node pp;
	pp.b[0] = aa.b[0];
	pp.b[1] = bb.b[1];
	fip(0,2)
		fjp(0,2){
			pp.v[i][j] = -1e18;
			fp(xx,0,2)
				fp(yy,0,2)				{
					if(xx&yy){
						if((aa.b[1]>0) == (bb.b[0]>0))
							pp.v[i][j] = max(pp.v[i][j],abs(aa.v[i][xx])+abs(bb.v[yy][j]));
					}else
						pp.v[i][j] = max(pp.v[i][j],abs(aa.v[i][xx])+abs(bb.v[yy][j]));
				}
		}
	return pp;
}

typedef struct SEGMENT_TREE{
	vector<node> arr;
	ll range;
	void init(ll k){
		range = log2(k);
		range = 1 << (range + 3);
		arr.resize(range);
		return;
	}
	void construct(ll ptr,ll l,ll r){
		if(l==r){
			fip(0,2)
				fjp(0,2)
					arr[ptr].v[i][j] = 0;
			arr[ptr].v[1][1] = (a[l+1]-a[l]);
			arr[ptr].b[0] = arr[ptr].b[1] = (a[l+1]-a[l]);
			return;
		}
		ll mid = l + (r-l) / 2;
		construct(2*ptr,l,mid);
		construct(2*ptr+1,mid+1,r);
		arr[ptr] = merge(arr[2*ptr],arr[2*ptr+1]);
		return ;
	}
	void update(ll ptr,ll l,ll r,ll idx,ll val){
		if(l==r && l==idx){
			arr[ptr].v[1][1] += val;
			arr[ptr].b[0] += val;
			arr[ptr].b[1] += val;
			return;
		}
		if(l>idx || r<idx)
			return;
		ll mid = l + (r-l) / 2;
		update(2*ptr,l,mid,idx,val);
		update(2*ptr+1,mid+1,r,idx,val);
		arr[ptr] = merge(arr[2*ptr],arr[2*ptr+1]);
		return;
	}
	ll query(){
		range = -1e18;
		fip(0,2)fjp(0,2)
		range = max(range,arr[1].v[i][j]);
		return range;
	}
	void deb(ll ptr,ll l,ll r){
		cerr<<ptr<<" "<<l<<" "<<r<<nli;
		fip(0,2)
			fjp(0,2)
				cerr<<i<<" "<<j<<" "<<arr[ptr].v[i][j]<<nli;
		cerr<<nli;
		if(l==r)
			return;
		ll mid = l + (r-l) / 2;
		deb(2*ptr,l,mid);
		deb(2*ptr+1,mid+1,r);
		return;
	}
}SGT;

SGT sgt;

int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    // #ifndef ONLINE_JUDGE
    //     freopen("input1.txt", "r", stdin);
    //     freopen("output1.txt", "w", stdout);
    //     freopen("error1.txt", "w", stderr);
    // #endif // ONLINE_JUDGE

        cin>>n>>m;
        sgt.init(n);
        fip(0,n)
        	cin>>a[i];
        sgt.construct(1,0,n-2);
        // fip(0,n-1)
        // 	sgt.update(1,0,n-2,i,a[i+1]-a[i]);
        // sgt.deb(1,0,n-2);
        while(m--){
        	cin>>tp>>tp2;
        	cin>>res;
        	tp--;
        	tp2--;
        	sgt.update(1,0,n-2,tp-1,res);
        	sgt.update(1,0,n-2,tp2,-res);
        	ans = sgt.query();
        	// sgt.deb(1,0,n-2);
        	cout<<ans<<nli;
        }
        
    cerr << "Time elapsed: " << setprecision(6) << 1000.0 * clock() / CLOCKS_PER_SEC << "ms\n";
    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 40 / 40
• Subtask 3: 55 / 55