結果
| 問題 | 
                            No.1060 素敵な宝箱
                             | 
                    
| コンテスト | |
| ユーザー | 
                             scol_kp
                         | 
                    
| 提出日時 | 2020-05-22 23:06:25 | 
| 言語 | C++17  (gcc 13.3.0 + boost 1.87.0)  | 
                    
| 結果 | 
                             
                                AC
                                 
                             
                            
                         | 
                    
| 実行時間 | 30 ms / 2,000 ms | 
| コード長 | 1,464 bytes | 
| コンパイル時間 | 2,539 ms | 
| コンパイル使用メモリ | 202,772 KB | 
| 最終ジャッジ日時 | 2025-01-10 15:01:09 | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge1 / judge3 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 3 | 
| other | AC * 24 | 
ソースコード
#include <bits/stdc++.h>
#define FASTIO
using namespace std;
using ll = long long;
using Vi = vector<int>;
using Vl = vector<ll>;
using Pii = pair<int, int>;
using Pll = pair<ll, ll>;
constexpr int I_INF = numeric_limits<int>::max();
constexpr ll L_INF = numeric_limits<ll>::max();
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void solve() {
    ll N, M;
    cin >> N >> M;
    vector<Vl> A(N, Vl(M));
    for (ll i = 0; i < N; i++) {
        for (ll j = 0; j < M; j++) {
            cin >> A[i][j];
        }
    }
    Vl ds(M);
    for (ll j = 0; j < M; j++) {
        for (ll i = 0; i < N; i++) {
            ds[j] += A[i][j];
        }
    }
    Vl es(N);
    for (ll i = 0; i < N; i++) {
        for (ll j = 0; j < M; j++) {
            es[i] += A[i][j] * ds[j];
        }
    }
    sort(es.begin(), es.end(), greater<ll>());
    ll ans = 0;
    for (ll i = 0; i < N; i++) {
        if (i & 1) {
            ans -= es[i];
        }
        else {
            ans += es[i];
        }
    }
    cout << ans << "\n";
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
int main() {
#ifdef FASTIO
    cin.tie(0), cout.tie(0);
    ios::sync_with_stdio(false);
#endif
#ifdef FILEINPUT
    ifstream ifs("./in_out/input.txt");
    cin.rdbuf(ifs.rdbuf());
#endif
#ifdef FILEOUTPUT
    ofstream ofs("./in_out/output.txt");
    cout.rdbuf(ofs.rdbuf());
#endif
    solve();
    cout << flush;
    return 0;
}
            
            
            
        
            
scol_kp