Submission #453251

#	Time	Username	Problem	Language	Result	Execution time	Memory
453251		prvocislo	Pairs (IOI07_pairs)	C++17	0 / 100	67 ms	21116 KiB

pairs

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
typedef long long ll;
using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int b, n, d, m;
    cin >> b >> n >> d >> m;
    vector<int> x(n), y(n), z(n);
    if (b == 3)
    {
        const int maxn = 80;
        vector<vector<vector<int> > > pf(maxn, vector<vector<int> >(maxn * 2, vector<int>(maxn * 2, 0)));
        for (int i = 0, x1, y1; i < n; i++)
        {
            cin >> x1 >> y1 >> z[i];
            x[i] = x1 + y1, y[i] = maxn + x1 - y1;
            pf[z[i]][x[i]][y[i]]++;
        }
        for (int i = 0; i < pf.size(); i++) for (int j = 1; j < pf[i].size(); j++) for (int k = 1; k < pf[i][j].size(); k++)
            pf[i][j][k] += pf[i][j - 1][k] + pf[i][j][k - 1] - pf[i][j - 1][k - 1];
        ll ans = 0;
        for (int i = 0; i < n; i++) for (int zi = 0; zi < maxn; zi++)
        {
            int di = d - abs(zi - z[i]);
            if (di < 0) continue;
            int x1 = max(0, x[i] - di), y1 = max(0, y[i] - di), x2 = min(maxn * 2 - 1, x[i] + di), y2 = min(maxn * 2 - 1, y[i] + di);
            ans += pf[zi][x2][y2] - pf[zi][x1 - 1][y2] - pf[zi][x2][y1 - 1] + pf[zi][x1 - 1][y1 - 1];
            //cout << pf[zi][x2][y2] - pf[zi][x1 - 1][y2] - pf[zi][x2][y1 - 1] + pf[zi][x1 - 1][y1 - 1] << "\n";
        }
        ans -= n;
        cout << ans/2 << "\n";
    }
    return 0;
}

Compilation message (stderr)

pairs.cpp: In function 'int main()':
pairs.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::vector<int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (int i = 0; i < pf.size(); i++) for (int j = 1; j < pf[i].size(); j++) for (int k = 1; k < pf[i][j].size(); k++)
      |                         ~~^~~~~~~~~~~
pairs.cpp:25:63: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (int i = 0; i < pf.size(); i++) for (int j = 1; j < pf[i].size(); j++) for (int k = 1; k < pf[i][j].size(); k++)
      |                                                             ~~^~~~~~~~~~~~~~
pairs.cpp:25:102: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (int i = 0; i < pf.size(); i++) for (int j = 1; j < pf[i].size(); j++) for (int k = 1; k < pf[i][j].size(); k++)
      |                                                                                                    ~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 6
• Subtask 3: 0 / 6
• Subtask 4: 0 / 6
• Subtask 5: 0 / 6
• Subtask 6: 0 / 7
• Subtask 7: 0 / 7
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• Subtask 11: 0 / 10
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• Subtask 13: 0 / 10