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답안 #375211

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
375211 2021-03-09T04:32:37 Z kiomi Sifra (COCI21_sifra) C++17
50 / 50
 1 ms 364 KB 
//order_of_key(k): Number of items strictly smaller than k .
//find_by_order(k): K-th element in a set (counting from zero).
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#define full(x,n) x,x+n+1
#define full(x) x.begin(),x.end()

#define f first
#define s second
#define len(x) (int)x.size()

//logx(a^n)=loga(a^n)/logx(a)
//logx(a*b)=logx(a)+logx(b)
//logx(y)=log(y)/log(x)
//logb(n)=loga(n)/loga(b)

#define ordered_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>

//(a+b)^n=sum of C(n,i)*a^i*b^(n-i) 0<=i<=n
//(a-b)^n=sum of C(n,i)*a^i*b^(n-i) for even i-for odd i

// 1/b%mod=b^(m-2)%mod
// (a>>x)&1==0
// a^b=(a+b)-2(a&b)

typedef double db;
typedef long long ll;

//sum of squares n*(n+1)*(2n+1)/6
//sum of cubes [n*(n+1)/2]^2
//sum of squares for odds n*(4*n*n-1)/3
//sum of cubes for odds n*n*(2*n*n-1)

const int ary=1e6+5;
const int mod=1e9+7;
const ll inf=1e18;

using namespace std;
using namespace __gnu_pbds;
string s;
int cnt[ary],ans;
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	cin>>s;
	int knt=0;
	for(int i=0;i<len(s);i++){
		if(s[i]>='0'&&s[i]<='9'){
			knt=knt*10+(s[i]-'0');
			if(i==len(s)-1||(s[i+1]<'0'||s[i+1]>'9')){
				cnt[knt]++;
				if(cnt[knt]==1){
					ans++;
				}
				knt=0;
			}
		}
	}
	cout<<ans;
}

Compilation message

Main.cpp:7: warning: "full" redefined
    7 | #define full(x) x.begin(),x.end()
      | 
Main.cpp:6: note: this is the location of the previous definition
    6 | #define full(x,n) x,x+n+1
      |

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct