2024: C++ cleanup

2024/5/main-1.cpp

@@ -14,10 +14,6 @@ int main() {
 		l >> a;
 		l.ignore();
 		l >> b;
-		if (!order.contains(a)) {
-			set<int> x;
-			order[a] = x;
-		}
 		order[a].insert(b);
 	}
 

2024/5/main-2.cpp

@@ -30,10 +30,6 @@ int main() {
 		l >> a;
 		l.ignore();
 		l >> b;
-		if (!order.contains(a)) {
-			set<int> x;
-			order[a] = x;
-		}
 		order[a].insert(b);
 	}
 

2024/6/main-1.cpp

@@ -8,7 +8,6 @@ int main() {
 	string line;
 	vector<string> lines;
 	while (getline(cin, line) && !line.empty()) {
-		istringstream l(line);
 		lines.push_back(line);
 	}
 

2024/6/main-2.cpp

@@ -8,7 +8,6 @@ int main() {
 	string line;
 	vector<string> lines;
 	while (getline(cin, line) && !line.empty()) {
-		istringstream l(line);
 		lines.push_back(line);
 	}
 
@@ -39,10 +38,7 @@ posend:;
 					pos.first -= dir.first;
 					pos.second -= dir.second;
 					int d = dir.first * 2 + dir.second;
-					if (!track.contains(pos)) {
-						set<int> s;
-						track[pos] = s;
-					} else if (track[pos].contains(d)) {
+					if (track[pos].contains(d)) {
 						count++;
 						goto next;
 					}