Submission #490592

#	Time	Username	Problem	Language	Result	Execution time	Memory
490592		inksamurai	Sjeckanje (COCI21_sjeckanje)	C++17	0 / 110	2 ms	340 KiB

Main

#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define crep(i,x,n) for(int i=x;i<n;i++)
#define drep(i,n) for(int i=n-1;i>=0;i--)
#define vec(...) vector<__VA_ARGS__>
#define _31av4qi ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
using pii=pair<int,int>;
using vi=vector<int>;
 
int sgn(int x){
	return x>=0?1:-1;
}
 
int main(){
_31av4qi;
	int n,q;
	cin>>n>>q;
	vi a(n);
	rep(i,n){
		cin>>a[i];
	}
	vi _d(n);
	rep(cs,q){
		int l,r,x;
		cin>>l>>r>>x;
		l--,r--;
		crep(i,l,r+1) a[i]+=x;
		crep(i,1,n) _d[i-1]=a[i]-a[i-1];
		ll ans=0;
		vec(vec(ll)) dp(n,vec(ll)(2,0));
		rep(i,n-1){
			dp[i][0]=max(dp[i][0],(i==0?0:dp[i-1][0])+(ll)_d[i]);
			dp[i][1]=max(dp[i][1],(i==0?0:dp[i-1][1])-(ll)_d[i]);
			dp[i][1]=max(dp[i][1],(i==0?0:dp[i-1][0]));
			dp[i][0]=max(dp[i][0],(i==0?0:dp[i-1][1]));
			// cout<<_d[i]<<" ";
		}	
		cout<<max(dp[n-2][1],dp[n-2][0])<<"\n";
	}
//	
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:37:6: warning: unused variable 'ans' [-Wunused-variable]
   37 |   ll ans=0;
      |      ^~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 55