Submission #703211

#	Time	Username	Problem	Language	Result	Execution time	Memory
703211		fdnfksd	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	212 KiB

segments

#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=5e5+10;
const ll inf=1e18;
const ll mod=1e9+7;
ll a[maxN],n;
ll get(ll x)
{
    ll sum=0;
    for(int i=1;i<=x;i++)
    {
        sum+=a[i];
    }
    ll cnt=1;
    for(int j=x+1;j<=n;j++)
    {
        ll k=j;
        ll ss=0;
        while(k<=n&&ss<sum)
        {
            ss+=a[k];
            k++;
        }
        j=k-1;
        if(ss>=sum) cnt++,sum=ss;
    }
    return cnt;
}
void solve()
{
    cin >> n;
    for(int i=1;i<=n;i++) cin >> a[i];
    ll low=2,high=n;
    while(low<=high)
    {
        ll mid=low+high>>1;
        if(get(mid)>get(mid-1)) low=mid+1;
        else high=mid-1;
    }
    cout << get(high);
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message (stderr)

segments.cpp: In function 'void solve()':
segments.cpp:41:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |         ll mid=low+high>>1;
      |                ~~~^~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27