Submission #374078

#	Time	Username	Problem	Language	Result	Execution time	Memory
374078		Nimbostratus	Baloni (COCI15_baloni)	C++17	0 / 100	238 ms	32108 KiB

baloni

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define clean(a,s) memset((a),0,sizeof((a)[0])*(s))
#define all(x) (x).begin() , (x).end()
#define fi first
#define se second
#define int int
using pii = pair<int,int>;
using ll = long long;
const int maxn = 1e6+5;
const int inf = 2e9;
const int mod = 1e9+7;

int n,a[maxn],ans;
vector<int> occ[maxn];

int32_t main () {
	//freopen("in","r",stdin); freopen("out","w",stdout);
	ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0);
	cin >> n;
	for(int i=1;i<=n;i++) cin >> a[i] , occ[a[i]].pb(i);
	ans = 1;
	for(int i=2;i<=n;i++) {
		int pos = lb(all(occ[a[i]+1]),i)-occ[a[i]+1].begin()-1;
		if(pos == -1 || pos >= occ[a[i]+1].size()) {
			ans++;
			continue;
		};
		pos = occ[a[i]+1][pos];
		if(*lb(all(occ[a[i]]),pos) < i) ans++;
	}
	cout << ans << endl;
}	
	

Compilation message (stderr)

baloni.cpp: In function 'int32_t main()':
baloni.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   if(pos == -1 || pos >= occ[a[i]+1].size()) {
      |                   ~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100