CodeforcesRound#248(Div.1)??Nanami'sDigitalBoard_html/css_WEB-ITnose

const int maxn = 1100;int n, m, q;int ipt[maxn][maxn];int up[maxn][maxn], dwn[maxn][maxn], lft[maxn][maxn], rht[maxn][maxn];int len[maxn];void updaterow(int r){    FE(j, 1, m)        lft[r][j] = (ipt[r][j] == 1 ? lft[r][j - 1] + 1 : 0);    FED(j, m, 1)        rht[r][j] = (ipt[r][j] == 1 ? rht[r][j + 1] + 1 : 0);}void updatecol(int c){    FE(i, 1, n)        up[i][c] = (ipt[i][c] == 1 ? up[i - 1][c] + 1 : 0);    FED(i, n, 1)        dwn[i][c] = (ipt[i][c] == 1 ? dwn[i + 1][c] + 1 : 0);}int maxarea(int s, int len[], int thes){    int l = s, r = s, ret = 0;    FED(i, len[s], 1)    {        while (l >= 1 && len[l] >= i)            l--;        while (r <= thes && len[r] >= i)            r++;        ret = max(ret, i * (r - l - 1));    }    return ret;}int main(){    while (~RIII(n, m, q))    {        FE(i, 1, n) FE(j, 1, m)            RI(ipt[i][j]);        FE(i, 1, n)            updaterow(i);        FE(j, 1, m)            updatecol(j);        REP(kase, q)        {            int op, x, y;            RIII(op, x, y);            if (op == 1)            {                ipt[x][y] ^= 1;                updatecol(y);                updaterow(x);            }            else            {                int ans = max(maxarea(y, up[x], m), maxarea(y, dwn[x], m));                FE(i, 1, n)                    len[i] = lft[i][y];                ans = max(ans, maxarea(x, len, n));                FE(i, 1, n)                    len[i] = rht[i][y];                ans = max(ans, maxarea(x, len, n));                WI(ans);            }        }    }    return 0;}