What Goes Up UVA - 481 LIS+打印路径 模板

Posted 2021-02-08 zxyqzy

打印严格上升子序列；

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<string>
#include<cmath>
#include<map>
#include<set>
#include<vector>
#include<queue>
#include<bitset>
#include<ctime>
#include<time.h>
#include<deque>
#include<stack>
#include<functional>
#include<sstream>
//#include<cctype>
//#pragma GCC optimize(2)
using namespace std;
#define maxn 200005
#define inf 0x7fffffff
//#define INF 1e18
#define rdint(x) scanf("%d",&x)
#define rdllt(x) scanf("%lld",&x)
#define rdult(x) scanf("%lu",&x)
#define rdlf(x) scanf("%lf",&x)
#define rdstr(x) scanf("%s",x)
#define mclr(x,a) memset((x),a,sizeof(x))
typedef long long  ll;
typedef unsigned long long ull;
typedef unsigned int U;
#define ms(x) memset((x),0,sizeof(x))
const long long int mod = 9999973;
#define Mod 1000000000
#define sq(x) (x)*(x)
#define eps 1e-5
typedef pair<int, int> pii;
#define pi acos(-1.0)
//const int N = 1005;
#define REP(i,n) for(int i=0;i<(n);i++)
typedef pair<int, int> pii;

inline int rd() {
	int x = 0;
	char c = getchar();
	bool f = false;
	while (!isdigit(c)) {
		if (c == ‘-‘) f = true;
		c = getchar();
	}
	while (isdigit(c)) {
		x = (x << 1) + (x << 3) + (c ^ 48);
		c = getchar();
	}
	return f ? -x : x;
}


ll gcd(ll a, ll b) {
	return b == 0 ? a : gcd(b, a%b);
}
int sqr(int x) { return x * x; }



/*ll ans;
ll exgcd(ll a, ll b, ll &x, ll &y) {
	if (!b) {
		x = 1; y = 0; return a;
	}
	ans = exgcd(b, a%b, x, y);
	ll t = x; x = y; y = t - a / b * y;
	return ans;
}
*/
int n;
int a[maxn];
int pos[maxn];
int dp[maxn];
int lst[maxn];

int main()
{
//	ios::sync_with_stdio(0);
	int x;// n = rd();
	n = 0;
	while (cin >> x) {
		n++; a[n] = x;
	}
	int len = 1, po = 1;
	dp[1] = a[1]; pos[1] = 1;
	for (int i = 2; i <= n; i++) {
		if (a[i] > dp[len]) {
			dp[++len] = a[i]; pos[++po] = len;
		}
		else {
			int ct = lower_bound(dp + 1, dp + len + 1, a[i]) - dp;
			dp[ct] = a[i]; pos[++po] = ct;
		}
	}
	cout << len << endl;
	puts("-");
	int tmp = len;
	for (int i = n; i >= 1; i--) {
		if (pos[i] == tmp)lst[tmp--] = a[i];
		if (tmp < 1)break;
	}
	for (int i = 1; i <= len; i++)printf("%d
", lst[i]);
	return 0;
}