From 581447d2c4be19d4fbf62646404d6551cd45c722 Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Tue, 16 Aug 2022 14:17:14 +0800
Subject: [PATCH] P3105 [USACO14OPEN]Fair Photography S

https://www.luogu.com.cn/record/83996634
---
 Luogu/P3105/P3105.cpp         | 47 +++++++++++++++++++++++++++++++++++
 Luogu/P3105/data/P3105_1.in   |  3 +++
 Luogu/P3105/data/P3105_1.out  |  3 +++
 Luogu/P3105/data/P3105_10.in  |  3 +++
 Luogu/P3105/data/P3105_10.out |  3 +++
 Luogu/P3105/data/P3105_2.in   |  3 +++
 Luogu/P3105/data/P3105_2.out  |  3 +++
 Luogu/P3105/data/P3105_3.in   |  3 +++
 Luogu/P3105/data/P3105_3.out  |  3 +++
 Luogu/P3105/data/P3105_4.in   |  3 +++
 Luogu/P3105/data/P3105_4.out  |  3 +++
 Luogu/P3105/data/P3105_5.in   |  3 +++
 Luogu/P3105/data/P3105_5.out  |  3 +++
 Luogu/P3105/data/P3105_6.in   |  3 +++
 Luogu/P3105/data/P3105_6.out  |  3 +++
 Luogu/P3105/data/P3105_7.in   |  3 +++
 Luogu/P3105/data/P3105_7.out  |  3 +++
 Luogu/P3105/data/P3105_8.in   |  3 +++
 Luogu/P3105/data/P3105_8.out  |  3 +++
 Luogu/P3105/data/P3105_9.in   |  3 +++
 Luogu/P3105/data/P3105_9.out  |  3 +++
 21 files changed, 107 insertions(+)
 create mode 100644 Luogu/P3105/P3105.cpp
 create mode 100644 Luogu/P3105/data/P3105_1.in
 create mode 100644 Luogu/P3105/data/P3105_1.out
 create mode 100644 Luogu/P3105/data/P3105_10.in
 create mode 100644 Luogu/P3105/data/P3105_10.out
 create mode 100644 Luogu/P3105/data/P3105_2.in
 create mode 100644 Luogu/P3105/data/P3105_2.out
 create mode 100644 Luogu/P3105/data/P3105_3.in
 create mode 100644 Luogu/P3105/data/P3105_3.out
 create mode 100644 Luogu/P3105/data/P3105_4.in
 create mode 100644 Luogu/P3105/data/P3105_4.out
 create mode 100644 Luogu/P3105/data/P3105_5.in
 create mode 100644 Luogu/P3105/data/P3105_5.out
 create mode 100644 Luogu/P3105/data/P3105_6.in
 create mode 100644 Luogu/P3105/data/P3105_6.out
 create mode 100644 Luogu/P3105/data/P3105_7.in
 create mode 100644 Luogu/P3105/data/P3105_7.out
 create mode 100644 Luogu/P3105/data/P3105_8.in
 create mode 100644 Luogu/P3105/data/P3105_8.out
 create mode 100644 Luogu/P3105/data/P3105_9.in
 create mode 100644 Luogu/P3105/data/P3105_9.out

diff --git a/Luogu/P3105/P3105.cpp b/Luogu/P3105/P3105.cpp
new file mode 100644
index 00000000..57d71e72
--- /dev/null
+++ b/Luogu/P3105/P3105.cpp
@@ -0,0 +1,47 @@
+#include <iostream>
+#include <algorithm>
+#include <cstring>
+#include <utility>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1e5 + 5;
+
+int n, f[N << 1], ans;
+std::pair<int, char> cows[N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    memset(f, 0x3f, sizeof(f));
+
+    cin >> n;
+
+    for (int i = 1; i <= n; i++) {
+        cin >> cows[i].first >> cows[i].second;
+    }
+
+    std::sort(cows + 1, cows + 1 + n);
+
+    f[n] = cows[1].first;
+    for (int i = 2, x = n; i <= n; i++) {
+        x += cows[i - 1].second == 'W' ? -1 : 1;
+        f[x] = std::min(f[x], cows[i].first);
+    }
+
+    for (int i = n << 1; i; i--) {
+        f[i] = std::min(f[i], f[i + 2]);
+    }
+
+    for (int i = 1, x = n; i <= n; i++) {
+        x += cows[i].second == 'W' ? -1 : 1;
+        ans = std::max(ans, cows[i].first - f[x]);
+    }
+
+    cout << ans << endl;
+
+    return 0;
+}
diff --git a/Luogu/P3105/data/P3105_1.in b/Luogu/P3105/data/P3105_1.in
new file mode 100644
index 00000000..8f2a6ca2
--- /dev/null
+++ b/Luogu/P3105/data/P3105_1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:288a3bf4e8f0373e903a9382b02108cfde55f9855514f3ea635346cfc341806b
+size 24
diff --git a/Luogu/P3105/data/P3105_1.out b/Luogu/P3105/data/P3105_1.out
new file mode 100644
index 00000000..f2baf931
--- /dev/null
+++ b/Luogu/P3105/data/P3105_1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10159baf262b43a92d95db59dae1f72c645127301661e0a3ce4e38b295a97c58
+size 2
diff --git a/Luogu/P3105/data/P3105_10.in b/Luogu/P3105/data/P3105_10.in
new file mode 100644
index 00000000..b8aabc35
--- /dev/null
+++ b/Luogu/P3105/data/P3105_10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9e9255d52a58c17d1845fa357b27d936429382863993db183e28560206d8f149
+size 1184242
diff --git a/Luogu/P3105/data/P3105_10.out b/Luogu/P3105/data/P3105_10.out
new file mode 100644
index 00000000..d7e382cc
--- /dev/null
+++ b/Luogu/P3105/data/P3105_10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4aa3e93b66d30794e6979701d16bdb9b29ad48e2f367ebd0cd84abd6357cf2cc
+size 10
diff --git a/Luogu/P3105/data/P3105_2.in b/Luogu/P3105/data/P3105_2.in
new file mode 100644
index 00000000..c37daaf8
--- /dev/null
+++ b/Luogu/P3105/data/P3105_2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3d37b26b302740d930f3d212c48e885033f728b4cb9e7bdd28feea6a19951a66
+size 1188
diff --git a/Luogu/P3105/data/P3105_2.out b/Luogu/P3105/data/P3105_2.out
new file mode 100644
index 00000000..d256993d
--- /dev/null
+++ b/Luogu/P3105/data/P3105_2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1d6c23c231003bb35b5716b7aac16d484d6b24e95283c59376a8b5968e18f485
+size 10
diff --git a/Luogu/P3105/data/P3105_3.in b/Luogu/P3105/data/P3105_3.in
new file mode 100644
index 00000000..7ad294ff
--- /dev/null
+++ b/Luogu/P3105/data/P3105_3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:898020fc9c38c1281305957354cf2da62ae39b79c3f4bbe0b004199247172493
+size 6586
diff --git a/Luogu/P3105/data/P3105_3.out b/Luogu/P3105/data/P3105_3.out
new file mode 100644
index 00000000..3e481f75
--- /dev/null
+++ b/Luogu/P3105/data/P3105_3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fb28b7aee076fc42ab8149841f81501248e81f6d0afc6caa07de58d629354121
+size 10
diff --git a/Luogu/P3105/data/P3105_4.in b/Luogu/P3105/data/P3105_4.in
new file mode 100644
index 00000000..2381bc47
--- /dev/null
+++ b/Luogu/P3105/data/P3105_4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:12dee89085b553eebf0a3bf43cd2f7503d5aba5331de2eb0a5d8496fdf417223
+size 119762
diff --git a/Luogu/P3105/data/P3105_4.out b/Luogu/P3105/data/P3105_4.out
new file mode 100644
index 00000000..d33ff38f
--- /dev/null
+++ b/Luogu/P3105/data/P3105_4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:428036a41cb3f6ac5079a21cfd134fcb6bc6cded2923c911006c5488c831bfe5
+size 10
diff --git a/Luogu/P3105/data/P3105_5.in b/Luogu/P3105/data/P3105_5.in
new file mode 100644
index 00000000..af494712
--- /dev/null
+++ b/Luogu/P3105/data/P3105_5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:33ad364902304311f6b3a7f50448bced97dce0ec065567eecf1233adfdff9168
+size 248647
diff --git a/Luogu/P3105/data/P3105_5.out b/Luogu/P3105/data/P3105_5.out
new file mode 100644
index 00000000..0f890c33
--- /dev/null
+++ b/Luogu/P3105/data/P3105_5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef987cc33b92d7b929dd0d499299eb5e5d1785228b721833d01462fe21676dea
+size 10
diff --git a/Luogu/P3105/data/P3105_6.in b/Luogu/P3105/data/P3105_6.in
new file mode 100644
index 00000000..780ce8ee
--- /dev/null
+++ b/Luogu/P3105/data/P3105_6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3d13d2db61353d4e68fef484c017c7bc90019852b53f4eb0c4274ef34bde60f0
+size 912167
diff --git a/Luogu/P3105/data/P3105_6.out b/Luogu/P3105/data/P3105_6.out
new file mode 100644
index 00000000..22dfa7b7
--- /dev/null
+++ b/Luogu/P3105/data/P3105_6.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4cf7a7f96f666c6a6be4f1b75201e4f5455c98c82f8c44a7c559bf73beed5d43
+size 10
diff --git a/Luogu/P3105/data/P3105_7.in b/Luogu/P3105/data/P3105_7.in
new file mode 100644
index 00000000..4e6c9ff2
--- /dev/null
+++ b/Luogu/P3105/data/P3105_7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00dea1a7d98ce2f16776bfaf1888c7929401c1f6dfadb65d4e89651050935c0b
+size 1066051
diff --git a/Luogu/P3105/data/P3105_7.out b/Luogu/P3105/data/P3105_7.out
new file mode 100644
index 00000000..194719e4
--- /dev/null
+++ b/Luogu/P3105/data/P3105_7.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:288fe497188b10f183241a265d48dc9d1a84a521678c3a4bff2b5239942c3c45
+size 10
diff --git a/Luogu/P3105/data/P3105_8.in b/Luogu/P3105/data/P3105_8.in
new file mode 100644
index 00000000..5afefe3e
--- /dev/null
+++ b/Luogu/P3105/data/P3105_8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 1184330
diff --git a/Luogu/P3105/data/P3105_8.out b/Luogu/P3105/data/P3105_8.out
new file mode 100644
index 00000000..0fb0ac1f
--- /dev/null
+++ b/Luogu/P3105/data/P3105_8.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2b905e8b0239b1cf36c756486456b1a7806cbca9770e157729cb391ef97d3a3
+size 9
diff --git a/Luogu/P3105/data/P3105_9.in b/Luogu/P3105/data/P3105_9.in
new file mode 100644
index 00000000..d9ae17c3
--- /dev/null
+++ b/Luogu/P3105/data/P3105_9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 1184499
diff --git a/Luogu/P3105/data/P3105_9.out b/Luogu/P3105/data/P3105_9.out
new file mode 100644
index 00000000..e6daccd6
--- /dev/null
+++ b/Luogu/P3105/data/P3105_9.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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