Submission #375211

#	Time	Username	Problem	Language	Result	Execution time	Memory
375211		kiomi	Sifra (COCI21_sifra)	C++17	50 / 50	1 ms	364 KiB

Main

//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 (stderr)

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 / 50