func_code_string: #include <bits/stdc++.h>   const int MAXN = 100100;   char S[MAXN];   char T[MAXN];   int aS[MAXN], aT[MAXN];   int bS[MAXN], bT[MAXN];   bool go() {     int leftS, rightS, leftT, rightT;     scanf( %d %d %d %d , &leftS, &rightS, &leftT, &rightT);     int lengthS = rightS - leftS + 1;     int lengthT = rightT - leftT + 1;     int as = aS[rightS];     if (as > lengthS) as = lengthS;     int at = aT[rightT];     if (at > lengthT) at = lengthT;     int bs = bS[rightS] - bS[leftS - 1];     int bt = bT[rightT] - bT[leftT - 1];     if (bs % 2 != bt % 2) {       return false;     }     if (bs > bt) {       return false;     }     if (as < at) {       return false;     }     if (bs == bt) {       if (as % 3 != at % 3) {         return false;       }     } else {       if (bs == 0 && as == at) {         return false;       }     }     return true;   }   void goA(char *s, int *ar) {     int run = 0;     for (int i = 1; s[i]; ++i) {       if (s[i] ==  A )         ++run;       else         run = 0;       ar[i] = run;     }   }   void goB(char *s, int *ar) {     int run = 0;     for (int i = 1; s[i]; ++i) {       if (s[i] ==  B  || s[i] ==  C ) ++run;       ar[i] = run;     }   }   int main() {     scanf( %s , S + 1);     scanf( %s , T + 1);     goA(S, aS);     goA(T, aT);     goB(S, bS);     goB(T, bT);     int q;     scanf( %d , &q);     for (int i = 0; i < q; ++i) {       if (go()) {         printf( 1 );       } else {         printf( 0 );       }     }     printf(  n );   }   