AtCoder Beginner Contest 457
A
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| #include<iostream>
using namespace std;
const int N = 150;
int a[N];
int main(){
int n;
cin >> n;
for(int i = 1;i<=n;i++){
cin >> a[i];
}
int x;
cin >> x ;
cout << a[x] << endl;
return 0;
}
|
B
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| #include<iostream>
using namespace std;
const int N = 2e5+10;
int a[N][N];
int n;
int main(){
cin >> n;
int idx = 1;
while(n-->0){
int t;
cin >> t;
for(int i=1;i<=t;i++)
cin >> a[idx][i];
idx++;
}
int x,y;
cin >> x >> y;
cout << a[x][y] << endl;
return 0;
}
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C
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G