func_code_string: #include <bits/stdc++.h>   #pragma comment(linker,  /STACK:128000000 )   using namespace std;   const int INF = 1000000000;   typedef struct zap {     int p;     zap *left, *right, *rod;   };   char s[100];   zap *top = 0, *temp = 0;   int dfs(zap *t) {     if (t->p == 0) {       printf( int );       return 0;     }     printf( pair< );     dfs(t->left);     printf( , );     dfs(t->right);     printf( > );     return 0;   }   int main() {     int k, i, v, j, x, y, to, n, r, p, l, fl, m;     scanf( %i , &n);     fl = 0;     while (scanf( %s , &s) != EOF) {       if (fl) {         printf( Error occurred n );         return 0;       }       if (!top) {         top = new zap;         top->left = top->rod = top->right = 0;         if (s[0] ==  p )           top->p = 1;         else           top->p = 0;         temp = top;         if (top->p == 0) fl = 1;         continue;       }       zap *newe = new zap;       if (s[0] ==  p )         newe->p = 1;       else         newe->p = 0;       newe->left = newe->right = newe->rod = 0;       newe->rod = top;       if (!top->left) {         top->left = newe;         top = newe;       } else if (!top->right) {         top->right = newe;         top = newe;       }       while (top->p == 0 || (top->left && top->right)) {         if (top == temp) {           fl = 1;           break;         }         top = top->rod;       }     }     if (top != temp || (top->p && (!top->left || !top->right))) {       printf( Error occurred n );       return 0;     }     dfs(top);     return 0;   }   