/**有需要自取,必须标明出处
- @param i Number, j Number, a Number, c Number
- @return Boolean
*/
var Solution = function(i, j, a, c){
var dj=a+c*(j-1) var di=a+c*(i-2) var q=(j*(a+dj))/2 var w=((i-1)*(a+di))/2 var z=q-w return z
};
/**有需要自取,必须标明出处
*/
var Solution = function(i, j, a, c){
var dj=a+c*(j-1) var di=a+c*(i-2) var q=(j*(a+dj))/2 var w=((i-1)*(a+di))/2 var z=q-w return z
};