#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
Main.cpp: In function 'int main()':
Main.cpp:37:6: warning: unused variable 'ans' [-Wunused-variable]
37 | ll ans=0;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
