#include <iostream>
#include <queue>
#include <string>
#include <cmath>

using namespace std;

struct Robot {
    int x, y; // position
    int dir; // direction
    int time; // spend time
} robot;

int main() {
    queue<Robot> one;

    int posX[]={0,-1,0,1};
    int posY[]={-1,0,1,0};
    int step[]={1,2,3};

    int n, m;
    int rX, rY, eX, eY;

    int map[55][55], dotMap[55][55];

    cin>>n>>m;
    for (int i=1;i<=n;++i) {
        for (int j=1;j<=m;++j) {
            cin>>map[i][j];
            if (map[i][j] == 1) {
                map[i-1][j]=1;
                map[i][j-1]=1;
                map[i-1][j-1]=1;
            }
        }
    }
    cin>>rX>>rY>>eX>>eY;

    int dirStep;
    string dir;

    cin>>dir;
    if (dir=="S") dirStep=0;
    if (dir=="W") dirStep=1;
    if (dir=="N") dirStep=2;
    if (dir=="E") dirStep=3;

    one.push((Robot){rX, rY, dirStep, 0});
    map[rX][rY] = 1;
    while (!one.empty()) {
        robot = one.front();
        one.pop();
        for (int st : step) {
            for (int i=0;i<4;++i) {
                int nx=robot.x+posX[i]*st;
                int ny=robot.y+posY[i]*st;

                if (nx < 1 || ny < 1 || nx > n || ny > m || map[nx][ny] == 1) continue;

                if (robot.x==eX&&robot.y==eY) {
                    cout<<robot.time;
                    return 0;
                }

                int time = robot.time + 1 + (robot.dir != i ? 1 : 0);

                if (robot.dir != i) robot.dir=i;

                one.push((Robot){nx, ny, robot.dir, time});
                map[nx][ny]=1;


            }
        }
    }

    cout<<-1;

    return 0;
}

我看着没问题，球大佬解答（写了好久了QAQ） 虽然最基础的输入输出不对，丢进去有30分

#include <iostream>
#include <queue>
#include <string>
#include <cmath>

using namespace std;

struct Robot {
    int x, y; // position
    int dir; // direction
    int time; // spend time
} robot;

int main() {
    queue<Robot> one;

    int posX[]={0,-1,0,1};
    int posY[]={-1,0,1,0};
    int step[]={1,2,3};

    int n, m;
    int rX, rY, eX, eY;

    int map[55][55], dotMap[55][55];

    cin>>n>>m;
    for (int i=1;i<=n;++i) {
        for (int j=1;j<=m;++j) {
            cin>>map[i][j];
            if (map[i][j] == 1) {
                map[i-1][j]=1;
                map[i][j-1]=1;
                map[i-1][j-1]=1;
            }
        }
    }
    cin>>rX>>rY>>eX>>eY;

    int dirStep;
    string dir;

    cin>>dir;
    if (dir=="S") dirStep=0;
    if (dir=="W") dirStep=1;
    if (dir=="N") dirStep=2;
    if (dir=="E") dirStep=3;

    one.push((Robot){rX, rY, dirStep, 0});
    map[rX][rY] = 1;
    while (!one.empty()) {
        robot = one.front();
        one.pop();
        for (int st : step) {
            for (int i=0;i<4;++i) {
                int nx=robot.x+posX[i]*st;
                int ny=robot.y+posY[i]*st;

                if (nx < 1 || ny < 1 || nx > n || ny > m || map[nx][ny] == 1) continue;

                if (robot.x==eX&&robot.y==eY) {
                    cout<<robot.time;
                    return 0;
                }

                int time = robot.time + 1 + (robot.dir != i ? 1 : 0);

                if (robot.dir != i) robot.dir=i;

                one.push((Robot){nx, ny, robot.dir, time});
                map[nx][ny]=1;


            }
        }
    }

    cout<<-1;

    return 0;
}

原来代码加了个边界还是不行www