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- #include <bits/stdc++.h>
- #define ll long long
- #define ull unsigned long long
- #define pi 3.141592654
- #define NUM 1e18
- #define Mod 1'000'000'007
- #define fixed(n) fixed<<setprecision(n)
- #define cin(v) for(auto &i:v) cin >> i ;
- #define cout(v) for(auto &i:v) cout << i <<" ";
- #define vowel(x) (x=='e'||x=='a'||x=='i'||x=='o'||x=='u')
- #define small(x) (x>=97&&x<=122)
- #define capital(x) (x>=65&&x<=90)
- #define Tolower(s) transform(s.begin(),s.end(),s.begin(),::tolower);
- #define Toupper(s) transform(s.begin(),s.end(),s.begin(),::toupper);
- #define all(v) ((v).begin()), ((v).end())
- #define allr(v) ((v).rbegin()), ((v).rend())
- #define updmax(a,b) a=max(a,b)
- #define updmin(a,b) a=min(a,b)
- #define ceil(a,b) ((a/b)+(a%b?1:0))
- /* asc -> 1 2 3 ,des -> 3 2 1 */
- /***********************************************************************************/
- using namespace std;
- void Rofyda_Elghadban(){
- #ifndef ONLINE_JUDGE
- freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
- #endif
- ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
- }
- void solve(){
- int t;
- cin>>t;
- while(t--){
- int n,m;
- cin>>n>>m;
- vector<vector<int>>v((n+1),vector<int>(n+1));
- for(int i=1;i<n+1;i++){
- for(int j=1;j<n+1;j++){
- cin>>v[i][j];
- }
- }
- for(int i=1;i<n+1;i++){
- for(int j=1;j<n+1;j++){
- v[i][j]+=v[i][j-1];
- }
- }
- for(int i=1;i<n+1;i++){
- for(int j=1;j<n+1;j++){
- v[i][j]+=v[i-1][j];
- }
- }
- cout<<v[m][m]<<"\n";
- }
- }
- int main(){
- Rofyda_Elghadban();
- //freopen("input.txt","r",stdin);
- //freopen("output.txt","r",stdout);
- solve();
- return 0;
- }
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