Submission #619631

#	Time	Username	Problem	Language	Result	Execution time	Memory
619631		1ne	Pairs (IOI07_pairs)	C++14	18 / 100	446 ms	293740 KiB

pairs

#include<bits/stdc++.h>
using namespace std;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int b,n,d,m;cin>>b>>n>>d>>m;
	if (b == 1){
		vector<int>arr(m + 1,0);
		for (int i = 0;i<n;++i){
			int a;cin>>a;
			arr[a]++;
		}
		for (int i = 1;i<=m;++i){
			arr[i]+=arr[i - 1];
		}
		long long ans = arr[d] * (arr[d] - 1)/2;
		for (int i = d + 1;i<=m;++i){
			//cout<<i<<" "<<(arr[i] - arr[i - 1])<<" "<<arr[i - 1] - arr[i - d - 1]<<'\n';
			long long pos = (arr[i] - arr[i - 1]) * (arr[i - 1] - arr[i - d - 1]);
			ans+=pos;
			ans+=(arr[i] - arr[i - 1]) * (arr[i] - arr[i - 1] - 1)/2;
		}
		cout<<ans<<'\n';
	}
	else if (b == 2){
		
	}
	else{
		
	}
	return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 6 / 6
• Subtask 3: 0 / 6
• Subtask 4: 0 / 6
• Subtask 5: 6 / 6
• Subtask 6: 0 / 7
• Subtask 7: 0 / 7
• Subtask 8: 0 / 8
• Subtask 9: 0 / 8
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10
• Subtask 12: 0 / 10
• Subtask 13: 0 / 10