CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:UpHereNorth
Submission time:2022-10-31 01:47:29 +0200
Language:C++ (C++17)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED28
#2ACCEPTED33
#3ACCEPTED39
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
#7ACCEPTED0.14 s3details
#8ACCEPTED0.19 s3details
#9ACCEPTED0.27 s3details

Code

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N =1e5;
const int inf = 1e9;
const ll mod = 1e9 + 7;
int main(){
ios::sync_with_stdio(0); cin.tie(0);
int n;
cin >> n;
vector<vector<int>> a(n, vector<int> (n));
vector<pair<int, pair<int, int>>> m;
for(int i = 0; i < n; ++i){
for(int j = 0; j < n; ++j){
cin >> a[i][j];
m.push_back({a[i][j], {i, j}});
}
}
sort(m.begin(), m.end());
vector<vector<ll>> ans(n, vector<ll> (n));
vector<ll> cols(n), rows(n);
ll sum = 0;
int pre = 1, prei = 0;
for(int i = 0; i < n * n; ++i){
auto [val, p] = m[i];
if(val != pre){
pre = val;
for(int j = prei; j < i; ++j){
auto [val2, p2] = m[j];
int y = p2.first, x = p2.second;
sum+=ans[y][x];
sum%=mod;
cols[x]+=ans[y][x];
cols[x]%=mod;
rows[y]+=ans[y][x];
rows[y]%=mod;
}
prei = i;
}
int y = p.first, x = p.second;
ans[y][x] = 1;
ans[y][x] += cols[x];
ans[y][x] %= mod;
ans[y][x] += rows[y];
ans[y][x] %= mod;
}
for(int i = prei; i < n * n; ++i){
auto [val, p] = m[i];
int y = p.first, x = p.second;
sum+=ans[y][x];
sum%=mod;
}
cout << sum << "\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