CF845C Two TVs

R42073332

problem/CF845C/CF845C.cpp

@@ -0,0 +1,34 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+bool cmp(pair<int, int> a, pair<int, int> b) {
+    return a.first == b.first ? a.second < b.second : a.first < b.first;
+}
+
+int main() {
+    int n;
+    pair<int, int> p[200005];
+    cin >> n;
+    for(int i = 0 ; i < n ; i++) {
+        cin >> p[i].first >> p[i].second;
+    }
+    sort(p, p+n, cmp);
+    int tv1 = -1, tv2 = -1;
+    for(int i = 0 ; i  < n ; i++) {
+        if(p[i].first > tv1) {
+            tv1 = p[i].second;
+        }
+        else {
+            if(p[i].first > tv2) {
+                tv2 = p[i].second;
+            }
+            else {
+                cout << "NO" << endl;
+                return 0;
+            }
+        }
+    }
+    cout << "YES" << endl;
+    return 0;
+}