Submission #23298

#	Time	Username	Problem	Language	Result	Execution time	Memory
23298		repeating	Gap (APIO16_gap)	C++11	30 / 100	2000 ms	524288 KiB

gap

#include <bits/stdc++.h>
#define F first
#define S second
#define P push
#define pb push_back
#define MEM(dp,i) memset(dp,i,sizeof(dp))
#define W while
#define R return
#define C continue
#define SI size()
#define ll long long
#define pll pair<ll,ll>
#define SF(x) scanf("%I64d",&x)

using namespace std;
const long long INF = 2e9;
long long MOD = 1e9+7;
void MinMax(ll ,ll ,ll *,ll *);
long long findGap(int ,int );
ll a[300006];
long long findGap(int t,int n){
    if(t==1){
        ll l=0,r=1e18;
        ll res=0;
        ll i=0,j=n-1;
        W(i<=j){
            MinMax(l,r,&l,&r);
            a[i]=l;
            a[j]=r;
            r--,l++;
            i++,j--;
        }
        for(int i=1;i<n;i++)res=max(res,a[i]-a[i-1]);
        R res;
    }
    else{
        vector<ll> arr;
        vector<pll> v[3];
        v[0].pb({0,1e18});
        ll x,y;
        ll cur=0;
        W(arr.SI!=n){
            ll sum;
            for(int i=0;i<v[cur].SI;i++){
                sum+=v[cur][i].S-v[cur][i].F+1;
            }
            ll len=sum/10000000;
            ll lef;
            for(int i=0;i<v[cur].SI;i++){
                lef=v[cur][i].F;
                W(lef<=v[cur][i].S){
                    MinMax(lef,min(lef+len,v[cur][i].S),&x,&y);
                    if(x==-1)C;
                    arr.pb(x);
                    if(x!=y)arr.pb(y);
                    x++,y--;
                    if(x<=y)v[cur^1].pb({x,y});
                }
            }
            v[cur].clear();
            cur^=1;
        }
        sort(arr.begin(),arr.end());
        ll res=0;
        for(int i=1;i<n;i++)
            res=max(res,arr[i]-arr[i-1]);
        R res;
    }
}
//int main(){
//    cout<<findGap(1,4);
//}
//void MinMax(ll s,ll t,ll *mn,ll *mx){
//    cout<<s<<" "<<t<<endl;
//    cin>>*mn>>*mx;
//}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         W(arr.SI!=n){
                 ^
gap.cpp:44:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i=0;i<v[cur].SI;i++){
                          ^
gap.cpp:49:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i=0;i<v[cur].SI;i++){
                          ^
gap.cpp:45:47: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
                 sum+=v[cur][i].S-v[cur][i].F+1;
                                               ^

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