Submission #1362592

#	Time	Username	Problem	Language	Result	Execution time	Memory
1362592		hsuan._.0528	Subset Mex (EGOI22_subsetmex)	C++20	100 / 100	1 ms	344 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define LL long long
const int maxn =3e5+10;

LL t, n, ans=0;
LL f[maxn];

void solve(){
    cin>>n;
    ans=0;
    for(int i=0; i<n; i++)  cin>>f[i];

    LL need=1, ans=0;
    for(int i=n-1; i>=0; i--){
        ans+=max(0ll, need-f[i]);
        need+=max(0ll, need-f[i]);
    }
    cout<<ans+1<<"\n";
}

signed main(){
    ios_base::sync_with_stdio(0);  cin.tie(0);

    cin>>t;
    while(t--)  solve();
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 17 / 17
• Subtask 3: 7 / 7
• Subtask 4: 9 / 9
• Subtask 5: 20 / 20
• Subtask 6: 9 / 9
• Subtask 7: 10 / 10
• Subtask 8: 23 / 23