Submission #81908

#	Time	Username	Problem	Language	Result	Execution time	Memory
81908		Bodo171	Gap (APIO16_gap)	C++14	12.65 / 100	71 ms	1660 KiB

gap

#include "gap.h"
#include <iostream>
using namespace std;
const int nmax=10005;
long long v[nmax];
long long mx,st,dr,act,len,oldlen,inf,sup;
int n,i;
long long findGap(int T, int N)
{
    n=N;
    if(T==1)
    {
        mx=0;
        v[0]=-1;v[n+1]=1LL*1e18+1;
        for(i=1;i<=(n+1)/2;i++)
        {
            MinMax(v[i-1]+1,v[n-i+2]-1,&v[i],&v[n-i+1]);
        }
        for(i=1;i<n;i++)
            mx=max(mx,v[i+1]-v[i]);
        return mx;
    }
    act=-1;len=1;oldlen=1;
    bool bun=1;
    MinMax(0,1LL*1e18,&inf,&sup);
    act=inf;
    for(i=1;i<=n&&bun==1;i++)
    {
        bool ok=0;
        if(act!=-1)oldlen=len;
        for(len;act+len/2<=sup&&ok==0;len*=2)
        {
            MinMax(act+1,act+len,&st,&dr);
            if(st!=-1)
                ok=1;
        }
        if(!ok)
            bun=0;
        if(act!=-1)
        {
            len=max(st-act,oldlen);
            act=dr;
        }
    }
	return len;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:31:16: warning: statement has no effect [-Wunused-value]
         for(len;act+len/2<=sup&&ok==0;len*=2)
                ^

• Subtask 1: 0 / 30
• Subtask 2: 12.6460549623 / 70