#include <algorithm>
#include <iostream>
#include <iomanip>
#include <numeric>
#include <cassert>
#include <vector>
#include <random>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=998244353;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};
vi vin(int n,int d=0){
vi a(n);
for(auto &i:a){
cin>>i;
i-=d;
}
return a;
}
vvi gin(int n,int m,int d=1){
vvi g(n);
for(int i=0;i<m;i++){
int u,v;
cin>>u>>v;
u-=d,v-=d;
g[u].push_back(v);
g[v].push_back(u);
}
return g;
}
const int M=1000001;
int n,b[M];
vi a;
int main(){
cin>>n;
a=vin(n);
for(int i=n-1;i>=0;i--){
int x=a[i];
if(b[x-1]){
b[x-1]--;
b[x]++;
}
else b[x]++;
}
int res=0;
for(auto i:b) res+=i;
cout<<res<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
3 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
374 ms |
7032 KB |
Output is correct |
6 |
Correct |
378 ms |
7544 KB |
Output is correct |
7 |
Correct |
302 ms |
6012 KB |
Output is correct |
8 |
Correct |
301 ms |
6136 KB |
Output is correct |
9 |
Correct |
331 ms |
6524 KB |
Output is correct |
10 |
Correct |
349 ms |
6648 KB |
Output is correct |