P1147 连续正整数和

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#include<bits/stdc++.h>
using namespace std;int m;int main()
{ios::sync_with_stdio(0),cin.tie(0);cin>>m;int l=1,r=2;int sum=1;while(l<=m/2){if(sum<m){sum+=r;r++;}else if(sum>m){sum-=l;l++;}else{cout<<l<<' '<<r-1<<endl;sum-=l;l++;}}return 0;
}