제출 #870126

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
870126		LTTrungCHL	Sjeckanje (COCI21_sjeckanje)	C++17	0 / 110	1 ms	4440 KiB

Main

///***LTT***///
/// ->NHAT QUOC GIA<- ///
#include<bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
#define endl "\n"
#define F first
#define S second
#define pb push_back
using namespace std;
const long long oo = 1e9+7;
const int N = 2 * 1e5 + 10;
int n, q;
long long a[N], d[N], dp[N];
int l, r, x;
void inp(){
	cin >> n >> q;
	for (int i = 1;i <= n;i++){
		cin >> a[i];
	}
    return;
}
void solve(){
	for (int i = 1;i <= q;i++){
		cin >> l >> r >> x;
		for (int j = l;j <= r;j++){
			a[j] += x;
		}
		for (int j = 1;j < n;j++){
			d[j] = abs(a[j] - a[j + 1]);
		}
		long long ans = 0;
		for (int j = 1;j < n;j++){
			dp[j] = d[j] + dp[j - 2];
			ans = max(ans, dp[j]);
		}
		cout << ans <<"\n";
	}
    return;
}
int main(){
    ios_base::sync_with_stdio(NULL);
    cin.tie(NULL);
    cout.tie(NULL);
    if (fopen("file.inp", "r")){
        freopen("file.inp", "r", stdin);
        freopen("file.out", "w", stdout);
    }
    //int t;
    //cin >> t;
    //while(t--){
    inp();
    solve();
    //}
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen("file.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         freopen("file.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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