robot programmabile 70/100

#include <fstream>
#include <iostream>
using namespace std;

struct commandOutput {
    pair<int,int> cords;
    int dir;
    int lastBomb;
};

void changeIncr(int dir, int& incrx, int& incry){
    switch (dir) {
        case 0:
            incrx = 1;
            incry = 0;
            break;
        case 1:
            incrx = 0;
            incry = -1;
            break;
        case 2:
            incrx = -1;
            incry = 0;
            break;
        case 3:
            incrx = 0;
            incry = 1;
    }
}

int main() {
    ifstream in("input.txt");
    ofstream out("output.txt");

    int N, M, i;
    in>>N>>M;

    commandOutput comms[N];
    int last = 0, x = 0, y = 0, dir = 0, incrx = 1, incry = 0;
    char command;
    for (i = 0; i < N; i++) {
        in>>command;
        if (command == 'R') {
            dir = dir == 3 ? 0 : dir+1;
            changeIncr(dir, incrx, incry);
        } else if (command == 'L') {
            dir = dir == 0 ? 3 : dir-1;
            changeIncr(dir, incrx, incry);
        } else if (command == 'F') {
            x += incrx;
            y += incry;
        } else if (command == 'B') {
            x -= incrx;
            y -= incry;
        }
        comms[i].cords = {x,y};
        comms[i].dir = dir;
        comms[i].lastBomb = last;
        if (command == 'X') {
            last = i+1;
        }
    }

    int s, e;
    bool end = false;
    x = 0; y = 0; dir = 0;
    for (i = 0; i < M && !end; i++) {
        in>>s>>e;
        while(s < comms[e].lastBomb) {
            e = comms[e].lastBomb-1;
            end = true;
        }
        if(s == 0){
            incrx = comms[e].cords.first;
            incry = comms[e].cords.second;
            last = comms[e].dir;
        }else{
            incrx = comms[e].cords.first - comms[s-1].cords.first;
            incry = comms[e].cords.second - comms[s-1].cords.second;
            last = comms[e].dir - comms[s-1].dir;
            if(comms[s-1].dir == 1){
                int temp = incrx;
                incrx = -incry;
                incry = temp;
            }else if(comms[s-1].dir == 2){
                incrx = -incrx;
                incry = -incry;
            }else if(comms[s-1].dir == 3){
                int temp = incrx;
                incrx = incry;
                incry = -temp;
            }
        }

        if(dir == 0){
            x += incrx;
            y += incry;
        }else if(dir == 1){
            x += incry;
            y -= incrx;
        }else if(dir == 2){
            x -= incrx;
            y -= incry;
        }else{
            x -= incry;
            y += incrx;
        }

        dir += last;
        if(dir > 3){
            dir-=4;
        }
        if(dir < 0){
            dir+=4;
        }
    }

    out<<x<<' '<<y<<'\n';

    in.close();
    out.close();
    return 0;
}