Submission #987419

#	Time	Username	Problem	Language	Result	Execution time	Memory
987419		cpdreamer	Sjeckanje (COCI21_sjeckanje)	C++14	55 / 110	2032 ms	6240 KiB

Main

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;

typedef tree<int,null_type,less<int>,rb_tree_tag,
        tree_order_statistics_node_update> indexed_set;
const int max_n=INT_MAX;
typedef long long  ll;
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define  P pair
#define V vector
const long long MOD = 1000000007; // 1e9 + 7


void file(){
    freopen("input.txt.txt","r",stdin);
    freopen("output.txt.txt","w",stdout);
}
void setio(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct station{
    int p;
    int c;
    int l;
    int r;
};
bool custom(station a,station b) {
    return a.p < b.p;
}

void solve(){
    ll n;
    cin>>n;
    ll q;
    cin>>q;
    ll A[n+1];
    for(int i=1;i<=n;i++){
        cin>>A[i];
    }
    ll dp[n+1];
    dp[0]=0;
    dp[1]=0;
    while(q--){
        int l,r;
        ll v;
        cin>>l>>r;
        cin>>v;
        for(int i=l;i<=r;i++){
            A[i]+=v;
        }
        ll maxer1=LONG_LONG_MIN;
        ll maxer2=LONG_LONG_MIN;
        for(int i=1;i<=n;i++){
            maxer1=max(maxer1,dp[i-1]-A[i]);
            maxer2=max(maxer2,dp[i-1]+A[i]);
            dp[i]=max(A[i]+maxer1,-A[i]+maxer2);
        }
        cout<<dp[n]<<endl;
    }
}


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //file();
    solve();

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void file()':
Main.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     freopen("input.txt.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("output.txt.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'void setio(std::string)':
Main.cpp:24:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:25:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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