Submission #180305

#	Time	Username	Problem	Language	Result	Execution time	Memory
180305		rzbt	Bigger segments (IZhO19_segments)	C++14	13 / 100	2 ms	376 KiB

segments

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 500005
typedef long long ll;


using namespace std;

ll n;
ll mz=0;
ll tz=0;
ll res=0;
ll niz[MAXN];
pair<ll,ll> dp[MAXN];
ll pref[MAXN];

ll bin(ll l,ll d,ll sol,ll tren){
    if(l>d)return sol;
    ll mid=(l+d)/2;
    if(pref[tren]-pref[mid]>=dp[mid].F)return bin(mid+1,d,mid,tren);
    return bin(l,mid-1,sol,tren);

}

int main()
{
    scanf("%lld", &n);
    for(ll i=1;i<=n;i++){
        scanf("%lld",niz+i);
        pref[i]=pref[i-1]+niz[i];
    }
    //dp[i]=mp(pref[i],1);
    for(ll i=1;i<=n;i++){
        ll koji=bin(1,i-1,0,i);
        //printf("   %lld %lld   %lld %lld",i,koji)
        dp[i]=mp(pref[i]-pref[koji],dp[koji].S+1);

    }
    printf("%lld",dp[n].S);

    return 0;
}

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &n);
     ~~~~~^~~~~~~~~~~~
segments.cpp:33:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",niz+i);
         ~~~~~^~~~~~~~~~~~~~

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