Submission #1363434

#	Time	Username	Problem	Language	Result	Execution time	Memory
1363434		coco2311	Room Temperature (JOI24_ho_t1)	C++17	35 / 100	0 ms	344 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long

int N,T;
vector<int> arr;

bool possible(int dist){
    int low=arr[0]-dist, up=arr[0]+dist;
    for(int i=0;i<N;i++){
        int l=arr[i]-dist, u=arr[i]+dist;
        low=max(low,l);
        up=min(up,u);
    }
    if(low>up)return false;
    return true;
}

signed main(){
    ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    cin>>N>>T;
    arr.resize(N);
    for(int i=0;i<N;i++){
        cin>>arr[i];
        arr[i]%=T;
    }
    int left=0,right=T;
    while(right-left>1){
        int mid=(left+right)/2;
        if(possible(mid)){
            right=mid;
        }
        else{
            left=mid;
        }
    }
    if(!possible(left)){
        cout<<right;
    }
    else{
        cout<<left;
    }
}

• Subtask 1: 0 / 15
• Subtask 2: 5 / 5
• Subtask 3: 30 / 30
• Subtask 4: 0 / 35
• Subtask 5: 0 / 15