Language: C++

// #include <zhaojinxi>
    #ifdef ONLINE_JUDGE
        #pragma GCC optimize(3)
    #endif
    #ifndef DEBUG
        #define NDEBUG
    #endif
    #include <bits/stdc++.h>
    #define def(v) int &v = e[i].v
    #define cls(a) memset (a, 0, sizeof (a))
    #define mset(a, b) memset (a, b, sizeof (a))
    #define go(i,e,...) for (int i = __VA_ARGS__; i; i = e[i].nt)
    #define fir(i,a,...) for (int i = a, i ## _end = __VA_ARGS__; i <= i ## _end; ++i)
    #define firr(i,a,...) for (int i = a, i ## _end = __VA_ARGS__; i >= i ## _end; --i)
    #ifdef DEBUG
        #define debug(...) (void)(fprintf (stderr, "debug in %d: ", __LINE__), fprintf (stderr, __VA_ARGS__), fprintf (stderr, "\n"))
        #define dbug(x) (std::cerr << #x " = " << (x) << std::endl)
    #else
        #define debug(...)
        #define dbug(...)
    #endif
    typedef long long LL;
    typedef long double LD;
    typedef unsigned long long ULL;
    #ifdef ONLINE_JUDGE
        namespace IO {
            char ibuf[1 << 21], *p1 = ibuf, *p2 = ibuf, obuf[1 << 21], *p = obuf;
            #define getchar() (::IO::p1 == ::IO::p2 && (::IO::p2 = (::IO::p1 = ::IO::ibuf) + fread (::IO::ibuf, 1, 1 << 21, stdin), ::IO::p1 == ::IO::p2) ? EOF : *::IO::p1++)
            #define putchar(x) (::IO::p == ::IO::obuf + sizeof (::IO::obuf) && (fwrite (::IO::obuf, 1, 1 << 21, stdout), ::IO::p = ::IO::obuf), *::IO::p++ = x)
            #define ioflush() (void)(fwrite (::IO::obuf, 1, ::IO::p - ::IO::obuf, stdout), fflush (stdout), ::IO::p = ::IO::obuf)
            struct outflush {~outflush () {ioflush ();}} flushout;
        }
    #endif
    namespace mystl {
        inline int rec () {
            int ch;
            for (ch = getchar (); isspace (ch); ch = getchar ());
            return ch;
        }
        inline bool rei (char &c) {
            int ch;
            for (ch = getchar (); isspace (ch); ch = getchar ());
            if (ch == EOF) return false;
            c = ch;
            return true;
        }
        inline bool rei (char *s) {
            if (!rei (*s)) return false;
            int ch;
            while (*++s = ch = getchar (), ch != EOF && !isspace (ch));
            *s = 0;
            return true;
        }
        template<class T>
        inline bool rei (T& x) {
            bool f = true;
            int ch;
            for (ch = getchar (); !isdigit (ch); ch = getchar ()) {
                if (ch == EOF) return false;
                f = ch != '-';
            }
            x = 0;
            if (f) while (isdigit (ch)) x = x * 10 + (ch & 15), ch = getchar ();
            else while (isdigit (ch)) x = x * 10 - (ch & 15), ch = getchar ();
            return true;
        }
        inline void pti (const char &c) {putchar (c);}
        inline void pti (const char *s) {while (*s) putchar (*s++);}
        template<class T>
        inline void pti (T x) {
            char buf[sizeof (T) * 3], *p = buf + 1;
            if (x >= 0) *buf = (x % 10) | 48, x /= 10;
            else putchar ('-'), *buf = (-(x % 10)) | 48, x = -(x / 10);
            while (x) *p++ = (x % 10) | 48, x /= 10;
            while (p != buf) putchar (*--p);
        }
        template<class T> inline void pri (const T &x) {pti (x), putchar (' ');}
        template<class T> inline void prn (const T &x) {pti (x), putchar ('\n');}
        template<class T, class... Args> inline bool rei (T&& x, Args&&... args) {return rei (std::forward<T> (x)) ? rei (args...) : false;}
        template<class T, class... Args> inline void pti (const T &x, const Args&... args) {pti (x), pti (args...);}
        template<class T, class... Args> inline void pri (const T &x, const Args&...args) {pri (x), pri (args...);}
        template<class T, class... Args> inline void prn (const T &x, const Args&...args) {pri (x), prn (args...);}
        template<class T1, class T2> inline T1& cmax (T1 &a, const T2 &b) {return a < b ? a = b : a;}
        template<class T1, class T2> inline T1& cmin (T1 &a, const T2 &b) {return a > b ? a = b : a;}
        template<class T> inline T lowbit (const T &x) {return x & -x;}
    }
using namespace std;
using namespace mystl;
signed main () {
    
    return 0;
}
const int MAXN = 1000005;
int n;
int ll;
int mr, ml;
int rr;
char s[MAXN];
signed main () {
    rei (n);
    fir (i, 1, n, l, r) {
        rei (s + 1);
        l = r = 0;
        for (int j = 1; s[j]; ++j) {
            if (s[j] == ')') {
                if (l) {
                    --l;
                }
                else {
                    ++r;
                }
            }
            else {
                ++l;
            }
        }
        if (l) {
            if (r) {
                ml += l;
                mr += r;
            }
            else {
                ll += l;
            }
        }
        else {
            rr += r;
        }
    }
    if (ll < mr || ll - mr + ml != rr) {
        prn ("No");
    }
    else {
        prn ("Yes");
    }
    return 0;
}

Compiler output:
a.cc:99:8: error: redefinition of 'int main()'
   99 | signed main () {
      |        ^~~~
a.cc:89:8: note: 'int main()' previously defined here
   89 | signed main () {
      |        ^~~~