Submission #68127550

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
const int N=3e5+10;
int dx[]={0,1,0,-1},dy[]={1,0,-1,0};
map<int,int> mp;
int n,m,k;
int a[N],b[N];
void slove(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        mp[i-a[i]]++;
    }
    int ans=0;
    for(int i=1;i<=n;i++){
        if(mp[i+a[i]]){
            ans+=mp[i+a[i]];
        }
    }
    cout<<ans<<endl;
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
    int T=1;
    // cin>>T;
    while(T--){
        slove();
    }
}

Submission Info

Submission Time
Task C - Distance Indicators
User Maikan
Language C++ 20 (gcc 12.2)
Score 300
Code Size 580 Byte
Status AC
Exec Time 126 ms
Memory 25588 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 29
Set Name Test Cases
Sample 00_sample_00.txt, 00_sample_01.txt, 00_sample_02.txt
All 00_sample_00.txt, 00_sample_01.txt, 00_sample_02.txt, 01_random_03.txt, 01_random_04.txt, 01_random_05.txt, 01_random_06.txt, 01_random_07.txt, 01_random_08.txt, 01_random_09.txt, 01_random_10.txt, 01_random_11.txt, 01_random_12.txt, 01_random_13.txt, 01_random_14.txt, 01_random_15.txt, 01_random_16.txt, 01_random_17.txt, 01_random_18.txt, 01_random_19.txt, 01_random_20.txt, 01_random_21.txt, 01_random_22.txt, 01_random_23.txt, 01_random_24.txt, 01_random_25.txt, 01_random_26.txt, 01_random_27.txt, 01_random_28.txt
Case Name Status Exec Time Memory
00_sample_00.txt AC 1 ms 3472 KiB
00_sample_01.txt AC 1 ms 3480 KiB
00_sample_02.txt AC 1 ms 3564 KiB
01_random_03.txt AC 68 ms 15928 KiB
01_random_04.txt AC 86 ms 17840 KiB
01_random_05.txt AC 47 ms 12816 KiB
01_random_06.txt AC 92 ms 18736 KiB
01_random_07.txt AC 123 ms 22152 KiB
01_random_08.txt AC 124 ms 22084 KiB
01_random_09.txt AC 126 ms 22068 KiB
01_random_10.txt AC 123 ms 22104 KiB
01_random_11.txt AC 69 ms 16504 KiB
01_random_12.txt AC 15 ms 6116 KiB
01_random_13.txt AC 69 ms 14540 KiB
01_random_14.txt AC 13 ms 6132 KiB
01_random_15.txt AC 83 ms 17468 KiB
01_random_16.txt AC 64 ms 12992 KiB
01_random_17.txt AC 37 ms 9640 KiB
01_random_18.txt AC 3 ms 4072 KiB
01_random_19.txt AC 44 ms 10992 KiB
01_random_20.txt AC 81 ms 15152 KiB
01_random_21.txt AC 74 ms 15284 KiB
01_random_22.txt AC 83 ms 15248 KiB
01_random_23.txt AC 57 ms 15376 KiB
01_random_24.txt AC 76 ms 25588 KiB
01_random_25.txt AC 56 ms 15932 KiB
01_random_26.txt AC 56 ms 15936 KiB
01_random_27.txt AC 56 ms 15840 KiB
01_random_28.txt AC 55 ms 15872 KiB