激ヤバTiny-Cで8-Queen.c

var success;
var board[8];
var yokoArray[8];
var leftUpper[88];
var rightUpper[88];
 
main() {    
    var max, state;
    max = 8 * 8 * 8 * 8 * 8 * 8 * 8 * 8;
    state = 0;
    success = 0;
    
    while (state < max) {
        check(state);
        state = state + 1;
    }
    
    println("%d", success);
    return;
}

check(getState) {
    var cur, i, yoko, tate;
    cur = getState;

    i = 0;
    while(i < 88) {
        leftUpper[i] = 0;
        rightUpper[i] = 0;
        i = i + 1;
    }

    i = 0;
    while(i < 8) {
        board[i] = cur % 8;
        cur = cur / 8;
        yokoArray[i] = 0;
        i = i + 1;
    }

    i = 0;    
    while(i < 8) {
        if (yokoArray[board[i]]) {
            return;
        } else {
            yokoArray[board[i]] = 1;
        }
        i = i + 1;
    }

    i = 0;
    while(i < 8) {
        yoko = i;
        tate = board[i];
        
        while (yoko * tate) {
            yoko = yoko - 1;
            tate = tate - 1;
        }
        
        if (leftUpper[yoko * 10 + tate]) {        
            return;
        } else {
            leftUpper[yoko * 10 + tate] = 1;    
        }
        i = i + 1;
    }

    i = 0;
    while(i < 8) {
        yoko = i;
        tate = 7 - board[i];

        while (yoko * tate) {
            yoko = yoko - 1;
            tate = tate - 1;
        }

        if (rightUpper[yoko * 10 + tate]) {
            return;
        } else {
            rightUpper[yoko * 10 + tate] = 1;
        }   
        i = i + 1;
    }
    
    success = success + 1;
    return;
}