#include <bits/stdc++.h>
using namespace std;
const int MAXN = 500010;
typedef long long ll;
pair<ll, ll> num[MAXN];
ll dp[2][MAXN], s[2][MAXN], menor[2][MAXN];
int main(void)
{
ios_base::sync_with_stdio(false); cin.tie(0);
int n;
cin >> n;
for (int i = 1; i <= n; i++)
cin >> num[i].first >> num[i].second;
sort(num+1, num+n+1);
dp[1][1] = num[1].second, s[1][1] = num[1].second, menor[1][1] = num[1].first;
dp[0][1] = 0LL, s[0][1] = 0LL, menor[0][1] = 0LL;
for (int i = 2; i <= n; i++)
{
ll aux = menor[0][i-1];
if (menor[0][i-1] == 0LL) aux = num[i].first;
if (s[0][i-1]-(num[i].first-aux) > s[1][i-1]-(num[i].first-menor[1][i-1]))
{
dp[1][i] = s[0][i-1]+num[i].second-(num[i].first-aux);
s[1][i] = s[0][i-1]+num[i].second;
menor[1][i] = aux;
}
else
{
dp[1][i] = s[1][i-1]+num[i].second-(num[i].first-menor[1][i-1]);
s[1][i] = s[1][i-1]+num[i].second;
menor[1][i] = menor[1][i-1];
}
if (dp[0][i-1] > dp[1][i-1])
{
dp[0][i] = dp[0][i-1];
s[0][i] = s[0][i-1];
menor[0][i] = menor[0][i-1];
}
else
{
dp[0][i] = dp[1][i-1];
s[0][i] = s[1][i-1];
menor[0][i] = menor[1][i-1];
}
}
if (menor[0][n] == 0LL)
cout << dp[1][n] << "\n";
else
cout << max(dp[0][n], dp[1][n]) << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |