Submission #4020469


Source Code Expand

#include <bits/stdc++.h>
#define MAX_N 100000
using namespace std;
typedef long long lnt;
template <class T> inline void read(T &x) {
	x = 0; int c = getchar(), f = 1;
	for (; !isdigit(c); c = getchar()) if (c == 45) f = -1;
	for (; isdigit(c); c = getchar()) (x *= 10) += f*(c-48);
}
int n; lnt l, c[MAX_N+5];
lnt a[MAX_N+5], b[MAX_N+5];
lnt sl[MAX_N+5], sr[MAX_N+5];
lnt f[2][MAX_N+5], g[2][MAX_N+5];
int main() {
	read(n), read(l);
	for (int i = 1; i <= n; i++)
		read(a[i]), b[i] = l-a[i], read(c[i]);
	for (int i = 1; i <= n; i++) sl[i] = sl[i-1]+c[i];
	for (int i = n; i >= 1; i--) sr[i] = sr[i+1]+c[i];
	for (int i = 1; i <= n; i++)
		f[0][i] = max(f[0][i-1], sl[i]-a[i]), 
		f[1][i] = max(f[1][i-1], sl[i]-2*a[i]);
	f[0][n+1] = f[0][1], f[1][n+1] = f[1][1];
	for (int i = n; i >= 1; i--)
		g[0][i] = max(g[0][i+1], sr[i]-b[i]), 
		g[1][i] = max(g[1][i+1], sr[i]-2*b[i]);
	g[0][0] = g[0][1], g[1][0] = g[1][1];
	lnt mx = 0;
	for (int p = 0, q = 1; p <= n; p++, q++)
		mx = max(mx, f[0][p]+g[1][q]), 
		mx = max(mx, f[1][p]+g[0][q]);
	return printf("%lld\n", mx), 0;
}

Submission Info

Submission Time
Task D - Static Sushi
User Azrael_Death
Language C++14 (GCC 5.4.1)
Score 500
Code Size 1108 Byte
Status AC
Exec Time 25 ms
Memory 7296 KB

Judge Result

Set Name Sample Subtask1 Subtask2
Score / Max Score 0 / 0 300 / 300 200 / 200
Status
AC × 4
AC × 29
AC × 50
Set Name Test Cases
Sample a01, a02, a03, a04
Subtask1 a01, a02, a03, a04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24, b25, b26, b27, b28, b29
Subtask2 a01, a02, a03, a04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24, b25, b26, b27, b28, b29, c30, c31, c32, c33, c34, c35, c36, c37, c38, c39, c40, c41, c42, c43, c44, c45, c46, c47, c48, c49, c50
Case Name Status Exec Time Memory
a01 AC 2 ms 4352 KB
a02 AC 2 ms 4352 KB
a03 AC 2 ms 4352 KB
a04 AC 2 ms 4352 KB
b05 AC 2 ms 4352 KB
b06 AC 2 ms 4352 KB
b07 AC 2 ms 4352 KB
b08 AC 2 ms 4352 KB
b09 AC 2 ms 4352 KB
b10 AC 2 ms 4352 KB
b11 AC 2 ms 4352 KB
b12 AC 2 ms 4352 KB
b13 AC 2 ms 4352 KB
b14 AC 2 ms 4352 KB
b15 AC 2 ms 4352 KB
b16 AC 2 ms 4352 KB
b17 AC 2 ms 4352 KB
b18 AC 2 ms 4352 KB
b19 AC 2 ms 4352 KB
b20 AC 2 ms 4352 KB
b21 AC 2 ms 4352 KB
b22 AC 2 ms 4352 KB
b23 AC 2 ms 4352 KB
b24 AC 2 ms 4352 KB
b25 AC 2 ms 4352 KB
b26 AC 2 ms 4352 KB
b27 AC 2 ms 4352 KB
b28 AC 2 ms 4352 KB
b29 AC 2 ms 4352 KB
c30 AC 11 ms 7296 KB
c31 AC 18 ms 7296 KB
c32 AC 25 ms 7296 KB
c33 AC 25 ms 7296 KB
c34 AC 24 ms 7296 KB
c35 AC 11 ms 7296 KB
c36 AC 24 ms 7296 KB
c37 AC 23 ms 7296 KB
c38 AC 23 ms 7296 KB
c39 AC 23 ms 7296 KB
c40 AC 23 ms 7296 KB
c41 AC 22 ms 7296 KB
c42 AC 23 ms 7296 KB
c43 AC 4 ms 4608 KB
c44 AC 22 ms 7296 KB
c45 AC 2 ms 4352 KB
c46 AC 22 ms 7296 KB
c47 AC 2 ms 4352 KB
c48 AC 23 ms 7296 KB
c49 AC 22 ms 7296 KB
c50 AC 23 ms 7296 KB