2352 반도체 설계

#include <stdio.h>
#include <vector>
#include <algorithm>
 
using namespace std;
 
int arr[50000] = { 0 };
vector<int> dp;
 
int main() {
    int n;
    scanf("%d", &n);
 
    for (int i = 1; i <= n; i++) {
        scanf("%d", &arr[i]);
    }
 
    dp.push_back(-1000000000);
 
    for (int i = 1; i <= n; i++) {
        if (dp.back() < arr[i]) {
            dp.push_back(arr[i]);
        }
        else {
            auto it = lower_bound(dp.begin(), dp.end(), arr[i]);
            *it = arr[i];
        }
    }
 
    printf("%d", dp.size() - 1);
}