oj.uz

답안 #626942

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
626942 2022-08-12T02:30:10 Z BackNoob Sjeckanje (COCI21_sjeckanje) C++14
55 / 110
 2000 ms 8756 KB 
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define MASK(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(x) (x).begin() , (x).end()
#define BIT(x , i) ((x >> (i)) & 1)
#define TASK "task"
#define sz(s) (int) (s).size()
 
using namespace std;
const int mxN = 5e5 + 227;
const int inf = 1e9 + 277;
const int mod = 1e9 + 7;
const ll infll = 1e18 + 7;
const int base = 307;
const int LOG = 20;
 
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}
 
int n;
int q;
ll a[mxN];
ll dp[mxN][3];
 
void solve()
{
	cin >> n >> q;
	for(int i = 1; i <= n; i++) cin >> a[i];

	while(q--) {
		int l, r, x;
		cin >> l >> r >> x;

		for(int i = l; i <= r; i++) a[i] += x;

		for(int i = 1; i <= n; i++)
		for(int j = 0; j < 3; j++) dp[i][j] = -infll;

		dp[1][0] = 0;
		for(int i = 1; i < n; i++) {
			for(int j = 0; j < 3; j++) {
				if(dp[i][j] == -infll) continue;
				if(j == 0) {
					if(a[i + 1] > a[i]) maximize(dp[i + 1][1], dp[i][j] + a[i + 1] - a[i]);
					maximize(dp[i + 1][0], dp[i][j]);
					if(a[i + 1] < a[i]) maximize(dp[i + 1][2], dp[i][j] + a[i] - a[i + 1]);
				}
				if(j == 1) {
					if(a[i + 1] > a[i]) maximize(dp[i + 1][1], dp[i][j] + a[i + 1] - a[i]);
					maximize(dp[i + 1][0], dp[i][j]);
				}
				if(j == 2) {
					if(a[i + 1] < a[i]) maximize(dp[i + 1][2], dp[i][j] + a[i] - a[i + 1]);
					maximize(dp[i + 1][0], dp[i][j]);
				}
			}
		}
		cout << max({dp[n][0], dp[n][1], dp[n][2]}) << endl;
	}
}
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

 
    int tc = 1;
    //cin >> tc;
    while(tc--) {
    	solve();
    }
    return 0;
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 104 ms 548 KB Output is correct
8 Correct 116 ms 520 KB Output is correct
9 Correct 116 ms 516 KB Output is correct
10 Correct 120 ms 656 KB Output is correct
11 Correct 103 ms 524 KB Output is correct
12 Correct 76 ms 528 KB Output is correct

Subtask #3
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 104 ms 548 KB Output is correct
8 Correct 116 ms 520 KB Output is correct
9 Correct 116 ms 516 KB Output is correct
10 Correct 120 ms 656 KB Output is correct
11 Correct 103 ms 524 KB Output is correct
12 Correct 76 ms 528 KB Output is correct
13 Execution timed out 2086 ms 8756 KB Time limit exceeded
14 Halted 0 ms 0 KB -