```
/**
* @param {number[]} ratings
* @return {number}
*/
var candy = function(ratings) {
var dp = [];
for (var i = 0; i < ratings.length; i++)
dp.push(1);
for (var i = 1; i < ratings.length; i++)
if (ratings[i] > ratings[i - 1])
dp[i] = dp[i - 1] + 1;
for (var i = ratings.length - 2; i >= 0; i--)
if (ratings[i] > ratings[i + 1] && dp[i] <= dp[i + 1])
dp[i] = dp[i + 1] + 1;
var ans = 0;
dp.forEach(function(item) {
ans += item;
});
return ans;
};
```