Submission #26534

#	Time	Username	Problem	Language	Result	Execution time	Memory
26534		TAMREF	Gap (APIO16_gap)	C++11	100 / 100	93 ms	8308 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll findGap(int T, int N)
{
    ll mn=0,mx=(ll)2e18,tmn,tmx,ans=0;
	if(T==1){
        MinMax(mn,mx,&tmn,&tmx);
        if(N==2) return tmx-tmn;
        mn=tmn,mx=tmx;
        for(int i=1;2*i<=N-1;i++){
            MinMax(mn+1,mx-1,&tmn,&tmx);
            if(tmx==-1){
                ans=max(ans,mx-mn);
                break;
            }
            //printf("%lld %lld %lld %lld\n",mn,mx,tmn,tmx);
            ans=max(ans,max(tmn-mn,mx-tmx));
            mn=tmn,mx=tmx;
        }
        ans=max(mx-mn,ans);
        return ans;
	}
	else{
        MinMax(mn,mx,&tmn,&tmx);
        if(N==2) return tmx-tmn;
        ll A=(tmx-tmn+N-2)/(N-1);
        mn=tmn;
        vector<ll> V;
        for(int i=0;i<N-1;i++){
            MinMax(mn+A*i+i,mn+A*(i+1)+i,&tmn,&tmx);
            V.push_back(tmn); V.push_back(tmx);
        }
        ll G=0;
        sort(V.begin(),V.end());
        for(int i=0;i<V.size()-1;i++) G=max(G,V[i+1]-V[i]);
        return G;
	}
	return 0;
}

Compilation message (stderr)

gap.cpp: In function 'll findGap(int, int)':
gap.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<V.size()-1;i++) G=max(G,V[i+1]-V[i]);
                      ^

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