Language: C++

#include <stdio.h>
#include <string.h>
 
int xmove[8001];
int ymove[8001];
int xmove_len=0, ymove_len=0;
 
char S[8001];
int goalx,goaly;
 
#include <stdio.h>
#include <string.h>
 
int xmove[8001];
int ymove[8001];
int xmove_len=0, ymove_len=0;
 
char S[8001];
int goalx,goaly;
 
char dp[8000][8000];
 
int abs(int a){ return (a < 0)? -a : a;}
char possible(int goal, int * move, int move_len){
    if(move_len == 0 && goal != 0) return 0;
    int sum = 0;
    for(int i = 0; i < move_len ; i++) sum += move[i];
    
    if(abs(sum-goal) % 2 == 1) return 0;
    //printf("sum=%d goal=%d\n",sum,goal);
    
    memset(dp, 0, sizeof(dp));
    dp[0][0] = 1;
    dp[0][move[0]]=1;
    for(int i = 1; i < move_len; i++){
        for(int j = 0; j <= abs(sum-goal)/2 && j < 8000; j++){
            dp[i][j] |= dp[i-1][j];
            if(j-move[i] >= 0) dp[i][j] |= dp[i-1][j-move[i]];    
            //printf("%d,",dp[i][j]);
        }
        //puts("");
    }
    return dp[move_len-1][abs(sum-goal)/2];
}
 
int main(void){
    //scanf("%s",S);
    //scanf("%d %d",&goalx,&goaly);
    goalx=-8000; goaly=0;
    for(int i = 0; i < 8000 ; i++){
        S[i]='F';
    }S[8000]=0;
 
    int xmove_ind = 0, ymove_ind = 0;
    char dir_x = 1;
    int count = 0;
    for(int i = 0; i <= strlen(S); i++){
        if(i == strlen(S) || S[i] == 'T' ){
            if(dir_x) xmove[xmove_ind++] = count;
            else      ymove[ymove_ind++] = count;
            
            dir_x = !dir_x;
            count = 0;
        }else{
            count++;
        }
    }
    xmove_len = xmove_ind;
    ymove_len = ymove_ind;
    /*
    puts("xmove:");
    for(int i = 0; i < xmove_len; i++){
        printf("%d,",xmove[i]);
    }puts("");
    
    puts("ymove:");
    for(int i = 0; i < ymove_len; i++){
        printf("%d,",ymove[i]);
    }puts("");
    */
    if(xmove_len == 1 && goalx != xmove[0]) puts("No");
    else if (possible(goalx-xmove[0], &(xmove[1]), xmove_len-1) && possible(goaly, ymove, ymove_len) )
        puts("Yes");
    else
        puts("No");
}

Compiler output:
a.cc:14:5: error: redefinition of 'int xmove [8001]'
   14 | int xmove[8001];
      |     ^~~~~
a.cc:4:5: note: 'int xmove [8001]' previously declared here
    4 | int xmove[8001];
      |     ^~~~~
a.cc:15:5: error: redefinition of 'int ymove [8001]'
   15 | int ymove[8001];
      |     ^~~~~
a.cc:5:5: note: 'int ymove [8001]' previously declared here
    5 | int ymove[8001];
      |     ^~~~~
a.cc:16:5: error: redefinition of 'int xmove_len'
   16 | int xmove_len=0, ymove_len=0;
      |     ^~~~~~~~~
a.cc:6:5: note: 'int xmove_len' previously defined here
    6 | int xmove_len=0, ymove_len=0;
      |     ^~~~~~~~~
a.cc:16:18: error: redefinition of 'int ymove_len'
   16 | int xmove_len=0, ymove_len=0;
      |                  ^~~~~~~~~
a.cc:6:18: note: 'int ymove_len' previously defined here
    6 | int xmove_len=0, ymove_len=0;
      |                  ^~~~~~~~~
a.cc:18:6: error: redefinition of 'char S [8001]'
   18 | char S[8001];
      |      ^
a.cc:8:6: note: 'char S [8001]' previously declared here
    8 | char S[8001];
      |      ^
a.cc:19:5: error: redefinition of 'int goalx'
   19 | int goalx,goaly;
      |     ^~~~~
a.cc:9:5: note: 'int goalx' previously declared here
    9 | int goalx,goaly;
      |     ^~~~~
a.cc:19:11: error: redefinition of 'int goaly'
   19 | int goalx,goaly;
      |           ^~~~~
a.cc:9:11: note: 'int goaly' previously declared here
    9 | int goalx,goaly;
      |           ^~~~~