2018年牛客多校算法寒假训练营练习比赛（第一场）C. 六子冲

2018年牛客多校算法寒假训练营练习比赛（第一场）C. 六子冲

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题目链接

做法：模拟即可

#include <bits/stdc++.h>
#define P pair<int,int>
#define fir first
#define sec second
#define rep(i,a,b) for(int i=a;i<=b;++i)
using namespace std;

int n, mp[11][11];
int dx[]={0,-1,1,0,0};
int dy[]={0,0,0,-1,1};
P pos[33];
int inb(int x,int y) {
    if(x<1||x>4||y<1||y>4) return 0;
    return 1;
}
int isb(int f, int x) {
    if(f == 1) return (1 <= x && x <= 6);
    return (7 <= x && x <= 12);
}
void upb(int x,int y) {
    int col = isb(1,mp[x][y]);
    rep(i,1,4) {
        if( (!inb(x - dx[i], y - dy[i]) || mp[x-dx[i]][y-dy[i]] == -1) &&
            (!inb(x + 3*dx[i], y + 3*dy[i]) || mp[x+3*dx[i]][y+3*dy[i]] == -1) &&
            (inb(x+dx[i],y+dy[i]) && isb(col, mp[x+dx[i]][y+dy[i]]))&&
            (inb(x+2*dx[i],y+2*dy[i]) && isb(col^1, mp[x+2*dx[i]][y+2*dy[i]])) ) {
                pos[mp[x+2*dx[i]][y+2*dy[i]]]=P(-1,-1), mp[x+2*dx[i]][y+2*dy[i]] = -1;
            }
    }
    rep(i,1,4) {
        if( (!inb(x - 2*dx[i], y - 2*dy[i]) || mp[x-2*dx[i]][y-2*dy[i]] == -1) &&
            (!inb(x + 2*dx[i], y + 2*dy[i]) || mp[x+2*dx[i]][y+2*dy[i]] == -1) &&
            (inb(x-dx[i],y-dy[i]) && isb(col, mp[x-dx[i]][y-dy[i]]))&&
            (inb(x+dx[i],y+dy[i]) && isb(col^1, mp[x+dx[i]][y+dy[i]])) ) {
                pos[mp[x+dx[i]][y+dy[i]]]=P(-1,-1), mp[x+dx[i]][y+dy[i]] = -1;
            }
    }
}

int main() {
    int CC = 0;
    while(scanf("%d",&n) != EOF) {
        memset(mp,-1,sizeof(mp));
        mp[1][1] = 11; mp[1][2] = 10; mp[1][3] = 9; mp[1][4] = 8;
        mp[2][1] = 12; mp[2][4] = 7;
        mp[3][1] = 1; mp[3][4] = 6;
        mp[4][1] = 2; mp[4][2] = 3; mp[4][3] = 4; mp[4][4] = 5;
        rep(i,1,4)rep(j,1,4)if(mp[i][j]!=-1)pos[mp[i][j]] = P(i,j);

        for(int ti = 1 ; ti <= n; ++ti) { int a,b;
            scanf("%d%d",&a,&b);
            int x = pos[a].fir, y = pos[a].sec;
            int tx = x + dx[b], ty = y + dy[b];
            pos[a] = P(tx,ty); mp[tx][ty] = a; mp[x][y] = -1;
            upb(tx,ty);
        }
        printf("#Case %d:
", ++CC);
        rep(i,1,4) { rep(j,1,4) printf("%3d",mp[i][j]<0?0:mp[i][j]); puts(""); }
    }
    return 0;
}