Language: C++

#include <bits/stdc++.h>                                           
 
//#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define forev(i, b, a) for(int i = (b); i >= (a); --i)
#define forn(i, a, b) for(int i = (a); i <= (b); ++i)
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
using namespace std;
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;
typedef unsigned long long ull;         
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;  
typedef long long ll;  
typedef double db;                             
 
 
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 555;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const int inf = 1e9, maxn = 4e5 + 148, mod = 1e9 + 7, N = 1e6 + 21;
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;

int n, m, mn[N], f[N];
string t[N];
char s[N];



main () {
	scanf("%d", &n);
	int bal += 0;
	for (int i = 1; i <= n; ++i) {
		scanf("\n%s", s);
		m = strlen(s);
		for (int j = 0; j < m; ++j) {
			t[i] += s[j]; 
			if (s[j] == '(')
				++bal;
			else
				--bal;
		}
	}

	if (bal) {
		cout << "No";
		return 0;
	}

	multiset < pii > q, qq;

	for (int i = 1; i <= n; ++i) {
		for (int j = 0; j < sz(t[i]); ++j) {
			if (t[i][j] == '(')
				++f[i];
			else
				--f[i];	
			mn[i] = min(mn[i], f[i]);
		}		

		q.insert({-mn[i], f[i]});		
	}	


	int lst = -1;


	while (sz(q)) {
		auto it = q.upper_bound(mp(lst, inf));
		while (it != q.end()) {
			if (it->f > bal)	
				break;
			lst = it->f;
			qq.insert(mp(it->s, it->f));
			++it;
		}

		if (!sz(qq)) {
			cout << "No";
			return 0;
		}

		pii x = *qq.rbegin();
//		cout << x.f << ' ' << x.s << endl;
		if (x.f >= 0) {
			qq.erase(qq.find(x));
			bal += x.f;
			q.erase(q.find(mp(x.s, x.f)));
		} else 
			break;		
	}
	
	while (sz(q)) {
		if (q.rbegin()->f > bal) {
			cout << "No";
			return 0;
		}
		pii x = *qq.rbegin();
		qq.erase(qq.find(x));
		q.erase(q.find(mp(x.s, x.f)));
		bal += x.f;
	}

	cout << "Yes";
}


Compiler output:
a.cc:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main () {
      | ^~~~
a.cc: In function 'int main()':
a.cc:48:17: error: expected initializer before '+=' token
   48 |         int bal += 0;
      |                 ^~
a.cc:55:35: error: 'bal' was not declared in this scope
   55 |                                 ++bal;
      |                                   ^~~
a.cc:57:35: error: 'bal' was not declared in this scope
   57 |                                 --bal;
      |                                   ^~~
a.cc:61:13: error: 'bal' was not declared in this scope
   61 |         if (bal) {
      |             ^~~
a.cc:87:37: error: 'bal' was not declared in this scope
   87 |                         if (it->f > bal)
      |                                     ^~~
a.cc:103:25: error: 'bal' was not declared in this scope
  103 |                         bal += x.f;
      |                         ^~~
a.cc:110:37: error: 'bal' was not declared in this scope
  110 |                 if (q.rbegin()->f > bal) {
      |                                     ^~~
a.cc:117:17: error: 'bal' was not declared in this scope
  117 |                 bal += x.f;
      |                 ^~~