제출 #1062427

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1062427		vjudge1	Intergalactic ship (IZhO19_xorsum)	C++17	9 / 100	2040 ms	1368 KiB

xorsum

    #include <bits/stdc++.h>
    using namespace std;
    const int mod = 1e9 + 7;
    int32_t main() {
      // cin.tie(0)->sync_with_stdio(0);
      // cin.exceptions(cin.failbit);
      int n;
      cin >> n;
      vector<int> vi(n);
      for (auto &a : vi)
        cin >> a;
     
      struct qry {
        int l, r, x;
      };
      int qs;
      cin >> qs;
      vector<qry> vq(qs);
      for (auto &a : vq) {
        cin >> a.l >> a.r >> a.x;
        a.l--, a.r--;
      }
     
      int sm = 0;
      // cout << "X\n";
      for (int i = 0; i < (1 << qs); i++) {
        vector<int> tmp(vi);
        for (int j = 0; j < qs; j++)
          if (i & (1 << j)) {
            for (int k = vq[j].l; k <= vq[j].r; k++)
              tmp[k] = tmp[k] ^ vq[j].x;
          }
     
        for (int j = 0; j < n; j++) {
          for (int k = j; k < n; k++) {
            int curs = 0;
            for (int l = j; l <= k; l++) {
              curs += tmp[l];
              curs %= mod;
            }
            sm += curs * curs % mod;
            sm %= mod;
          }
        }
      }
     
      cout << sm << "\n";
    }

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 0 / 6
• Subtask 4: 0 / 9
• Subtask 5: 0 / 8
• Subtask 6: 0 / 11
• Subtask 7: 0 / 19
• Subtask 8: 0 / 30
• Subtask 9: 0 / 8