Task: | Ruudukko |
Sender: | chaotic |
Submission time: | 2022-11-02 17:17:29 +0200 |
Language: | C++ (C++17) |
Status: | READY |
Result: | 100 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 28 |
#2 | ACCEPTED | 33 |
#3 | ACCEPTED | 39 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#2 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#3 | ACCEPTED | 0.00 s | 1, 2, 3 | details |
#4 | ACCEPTED | 0.01 s | 2, 3 | details |
#5 | ACCEPTED | 0.01 s | 2, 3 | details |
#6 | ACCEPTED | 0.01 s | 2, 3 | details |
#7 | ACCEPTED | 0.17 s | 3 | details |
#8 | ACCEPTED | 0.72 s | 3 | details |
#9 | ACCEPTED | 0.62 s | 3 | details |
Code
#include <algorithm>#include <cassert>#include <cmath>#include <iostream>#include <numeric>#include <vector>using ll = long long;ll mod = 1000000000 + 7;// ll mod = 2;struct Index {ll value;int idx;};class Sums {public:Sums(ll n_): n(n_) {rowsum.resize(n, 0);colsum.resize(n, 0);}ll size() const { return n; }static ll do_mod(ll x) {if (x >= mod) x %= mod;return x;}ll sum_at(ll row, ll col) { return (rowsum[row] + colsum[col]) % mod; }ll sum_at(ll i) { return sum_at(i / n, i % n); }ll n;std::vector<ll> rowsum; // jokaisen rivin summastd::vector<ll> colsum; // jok. kolumnin summa};struct Array {public:Array(ll n_): n(n_) { array.resize(n * n, 0); }ll& operator()(ll row, ll col) { return array[row * n + col]; }ll& operator[](ll i) { return array[i]; }ll operator[](ll i) const { return array[i]; }ll size() const { return n; }const ll n;std::vector<ll> array;};Array read_input() {ll n;std::cin >> n;Array array{ n };for (ll i = 0; i < n * n; ++i) {ll v;std::cin >> v;array[i] = v;}return array;}auto create_indices(Array const& array) {std::vector<Index> indices;const int n2 = array.size() * array.size();indices.reserve(n2);for (int i = 0; i < n2; ++i) { indices.push_back({ array[i], i }); }std::sort(indices.begin(), indices.end(), [](Index a, Index b) { return a.value < b.value; });return indices;}int main() {std::cin.sync_with_stdio(false);auto array = read_input();// Array array(2);// array.array = { 1, 2, 3, 4 };const auto indices = create_indices(array);Sums sums(array.size());ll res = 0;const ll n2 = array.size() * array.size();ll i = 0;ll cur_val = 0;while (i < n2) {auto tmp_sums = sums;while (indices[i].value == cur_val) {ll idx = indices[i].idx;ll row = idx / array.size();ll col = idx % array.size();res += 1 + sums.rowsum[row] + sums.colsum[col];tmp_sums.rowsum[row] += 1 + sums.rowsum[row] + sums.colsum[col];tmp_sums.colsum[col] += 1 + sums.colsum[col] + sums.rowsum[row];res %= mod;tmp_sums.rowsum[row] %= mod;tmp_sums.colsum[col] %= mod;++i;//}sums = std::move(tmp_sums);cur_val = indices[i].value;}std::cout << res << "\n";}
Test details
Test 1
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
3 1 1 1 1 1 1 1 1 1 |
correct output |
---|
9 |
user output |
---|
9 |
Test 2
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
3 1 2 3 6 5 4 7 8 9 |
correct output |
---|
135 |
user output |
---|
135 |
Test 3
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
3 7 8 1 4 5 4 3 9 6 |
correct output |
---|
57 |
user output |
---|
57 |
Test 4
Group: 2, 3
Verdict: ACCEPTED
input |
---|
100 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
10000 |
user output |
---|
10000 |
Test 5
Group: 2, 3
Verdict: ACCEPTED
input |
---|
100 1 2 3 4 5 6 7 8 9 10 11 12 13 ... |
correct output |
---|
187458477 |
user output |
---|
187458477 |
Test 6
Group: 2, 3
Verdict: ACCEPTED
input |
---|
100 2995 8734 1018 2513 7971 5063 ... |
correct output |
---|
964692694 |
user output |
---|
964692694 |
Test 7
Group: 3
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
1000000 |
user output |
---|
1000000 |
Test 8
Group: 3
Verdict: ACCEPTED
input |
---|
1000 1 2 3 4 5 6 7 8 9 10 11 12 13 ... |
correct output |
---|
229147081 |
user output |
---|
229147081 |
Test 9
Group: 3
Verdict: ACCEPTED
input |
---|
1000 520283 805991 492643 75254 527... |
correct output |
---|
951147313 |
user output |
---|
951147313 |