C. Letters1000 / 双指针

Posted 2021-11-04 幽殇默

https://codeforces.com/problemset/problem/978/C

#include<bits/stdc++.h>
using namespace std;
typedef long long int LL;
const int N=1e5*2+10;
int n,m;
LL a[N],b[N];
int main(void) 
{
	cin>>n>>m;
	for(int i=1;i<=n;i++) cin>>a[i];
	for(int i=1;i<=m;i++) cin>>b[i];
	LL sum=0,i=1,j=1; 
	while(i<=m)
	{
		while(sum+a[j]<b[i]) sum+=a[j],j++;
		cout<<j<<" "<<b[i]-sum<<endl;
		i++;
	}
}