#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 <typename num_t>
using ordered_set = tree<num_t, null_type, less<num_t>, rb_tree_tag, tree_order_statistics_node_update>;
#ifdef pikachu
#include "welcome_to_python_is_slower_than_c++_club.h"
#else
#include <bits/stdc++.h>
using namespace std;
#define debug(...) 69
#endif
template<typename T1, typename T2>istream& operator>>(istream& in, pair<T1, T2>& a) { return in >> a.first >> a.second; }
template<typename T1, typename T2>ostream& operator<<(ostream& out, pair<T1, T2> a) { return out << a.first << " " << a.second;}
template<typename T> void print(T t) { cout << t <<' '; }
template<typename T, typename... Args> void print(T t, Args... args) { print(t);print(args...); }
string operator*=(string& s, int cnt) { string t = s;for (size_t i = 1; i < cnt; i++)s += t;return s; }
string operator*(string s, int cnt) { return s *= cnt; }
// #define int long long
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(),(x).rend()
#define uniq(v) (v).erase(unique(all(v)),(v).end())
#define len(x) (int)((x).size())
#define bk back()
#define elif else if
#define add insert
#define append push_back
// #define pop pop_back
#define str string
#define in :
#define fr first
#define sc second
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<pii>
#define mi map<int,int>
#define mii map<pii,int>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>b;i--)
#define el '\n'
#define printl(arg) cout << arg << endl
// #define print(arg) cout << arg
#define inputa(arg) for (auto& e : arg) cin >> e
#define printa(arg) for (auto& e : arg) print(e);
#define printr(arg) { printl(arg);return; }
#define printd(arg) printf("%0.3lf\n", arg)
const int mod=1e9+7;
// const int INF=1e18;
const int MAX_N= 2e5+10;
int n,m,k,x,y,z,t,q,counter;
int s_tree[MAX_N*4][4],lazy[MAX_N*4];
int lazy_def=0;
vi a;
int ans;
void solve(int x,int y,int z,int f,int l,bool bol){
bool diff=false;
if((a[f]<0 and a[l]>=0) or (a[f]>=0 and a[l]<0)){
diff=true;
}
if (diff){
if(not bol)
s_tree[x][0]=max({s_tree[y][0]+s_tree[z][2],s_tree[y][1]+max(s_tree[z][0],s_tree[z][2])});
s_tree[x][1]=max(s_tree[y][0]+s_tree[z][3],s_tree[y][1]+max(s_tree[z][1],s_tree[z][3]));
s_tree[x][2]=max(s_tree[y][2]+s_tree[z][2],s_tree[y][3]+max(s_tree[z][0],s_tree[z][2]));
s_tree[x][3]=max(s_tree[y][2]+s_tree[z][3],s_tree[y][3]+max(s_tree[z][1],s_tree[z][3]));
}else{
s_tree[x][0]=max(s_tree[y][0],s_tree[y][1])+max(s_tree[z][0],s_tree[z][2]);
s_tree[x][2]=max(s_tree[y][2],s_tree[y][3])+max(s_tree[z][0],s_tree[z][2]);
s_tree[x][1]=max(s_tree[y][0],s_tree[y][1])+max(s_tree[z][1],s_tree[z][3]);
s_tree[x][3]=max(s_tree[y][2],s_tree[y][3])+max(s_tree[z][1],s_tree[z][3]);
}
}
void build_seg(int i_tree,int left,int right){
if(left==right){
s_tree[i_tree][0]=abs(a[left]);
}else{
int mid=(left+right)/2;
build_seg(i_tree*2,left,mid);
build_seg(i_tree*2+1,mid+1,right);
solve(i_tree,i_tree*2,i_tree*2+1,mid,mid+1,mid==left);
}
}
void update(int i_tree,int left,int right,int l,int r){
if(right<l or left>r) return;
if(l<=left and right<=r){
s_tree[i_tree][0]=abs(a[left]);
return;
}
int mid=(left+right)/2;
update(i_tree*2,left,mid,l,r);
update(i_tree*2+1,mid+1,right,l,r);
solve(i_tree,i_tree*2,i_tree*2+1,mid,mid+1,mid==left);
}
void code(){
cin>>n>>m;
vector<int>ck(n);
inputa(ck);
rep(i,1,n) a.append(ck[i]-ck[i-1]);
build_seg(1,0,n-2);
while(m--){
cin>>x>>y>>z;
x-=2;
if(x>=0) {
a[x]+=z;
update(1,0,n-2,x,x);
}
y--;
if(y<n-1){
a[y]-=z;
update(1,0,n-2,y,y);
}
cout<<max({s_tree[1][0],s_tree[1][1],s_tree[1][2],s_tree[1][3]})<<el;
}
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
// freopen("optmilk.in", "r", stdin);
// freopen("optmilk.out", "w", stdout);
int t = 1;
// cin>>t;
while(t--) code();
return 0;
}
Compilation message
Main.cpp: In function 'std::string operator*=(std::string&, int)':
Main.cpp:24:75: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
24 | string operator*=(string& s, int cnt) { string t = s;for (size_t i = 1; i < cnt; i++)s += t;return s; }
| ~~^~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
