CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:stpn129
Submission time:2022-11-13 18:59:13 +0200
Language:C++ (C++11)
Status:READY
Result:61
Feedback
groupverdictscore
#1ACCEPTED28
#2ACCEPTED33
#30
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3details
#2ACCEPTED0.00 s1, 2, 3details
#3ACCEPTED0.00 s1, 2, 3details
#4ACCEPTED0.01 s2, 3details
#5ACCEPTED0.01 s2, 3details
#6ACCEPTED0.01 s2, 3details
#7ACCEPTED0.24 s3details
#8ACCEPTED0.66 s3details
#9--3details

Code

#include "bits/stdc++.h"
#define int long long
using namespace std;
map<int, int> mp;
const int mod = 1e9+ 7;
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, i, j, m, val, x, res;
cin >> n;
unordered_map<int, int> isums;
unordered_map<int, int> jsums;
unordered_map<int, int> iadds;
unordered_map<int, int> jadds;
unordered_map<int, vector<int*>> cells;
unordered_map<int, int>::iterator ii;
vector<vector<int>> g(n, vector<int> (n));
for (int i = 0; i < n; ++i) {
for (int j = 0; j < n; ++j) {
cin >> x;
int *ij = (int*)malloc(2 * sizeof(int));
ij[0] = i;
ij[1] = j;
cells[x].push_back(ij);
}
}
std::vector<int> keys;
std::vector<int>::iterator ik;
keys.reserve (cells.size());
for (auto& it : cells) {
keys.push_back(it.first);
}
std::sort (keys.begin(), keys.end());
res = 0;
for (int key : keys)
{
iadds.clear();
jadds.clear();
for(int* pi : cells[key])
{
i = pi[0];
j = pi[1];
val = (1 + isums[i] + jsums[j]) % mod;
res = (res + val) % mod;
iadds[i] = (iadds[i] + val) % mod;
jadds[j] = (jadds[j] + val) % mod;
}
for (ii = iadds.begin(); ii != iadds.end(); ii++){
m = ii->first;
val = ii->second;
isums[m] += val;
isums[m] %= mod;
}
for (ii = jadds.begin(); ii != jadds.end(); ii++){
m = ii->first;
val = ii->second;
jsums[m] += val;
jsums[m] %= mod;
}
}
cout << res << "\n"; return 0;
}

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:

input
1000
520283 805991 492643 75254 527...

correct output
951147313

user output
(empty)