原题链接:Leetcode 279. 完全平方数
cpp
class Solution {
public:
int numSquares(int n) {
vector<int> dp(n + 1, 0);
for (int i = 1; i <= n; i++) {
int tmp = INT_MAX;
for (int j = 1; j * j <= i; j++) {
tmp = min(tmp, dp[i - j * j]);
}
dp[i] = tmp + 1;
}
return dp[n];
}
};