Submission #720949

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Source Code Expand

#include<iostream>
#include<vector>
#include<string>

using namespace std;

int main(){
	int n, k;
	unsigned int  sum[2] = { 0, 0 };
	cin >> n >> k;
	vector<int> a(n);

	for (int i = 0; i < n; i++){
		cin >> a[i];
	}
	for (int i = 0; i < n - k + 1; i++){
		for (int j = i; j < k+i; j++){
			sum[0] += a[j];
			if (sum[0] > 1000000000){
				sum[1] += sum[0] / 1000000000;
				sum[0] = sum[0] %  1000000000;
			}
		}
		
	}
	if (sum[1] != 0){
		cout << sum[1] << sum[0] << endl;
	}
	else{
		cout << sum[0] << endl;
	}
}

Submission Info

Judge Result