1 files changed, 28 insertions, 0 deletions
diff --git a/codeforces/Tram/main.cpp b/codeforces/Tram/main.cpp
new file mode 100644
index 0000000..ff917a6
--- /dev/null
+++ b/codeforces/Tram/main.cpp
@@ -0,0 +1,28 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+typedef long long ll;
+typedef pair<int, int> ii;
+typedef vector<ii> vii;
+typedef vector<int> vi;
+
+#define INF 1000000000
+
+int main () {
+	ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+  int mx = 0;
+  int n;
+  cin >> n;
+  vi v(n);
+  int x, y;
+  cin >> x >> y;
+  v[0] = y;
+  for (int i = 0; i < n - 1; ++i) {
+    int x, y;
+    cin >> x >> y;
+    v[i + 1] = v[i] + (y - x);
+	}
+  cout << *max_element(v.begin(), v.end()) << '\n';
+}