CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:Lordoa
Submission time:2022-11-13 18:48:42 +0200
Language:C++ (C++17)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3details
#20.00 s1, 2, 3details
#3ACCEPTED0.00 s1, 2, 3details
#4ACCEPTED0.01 s2, 3details
#50.01 s2, 3details
#60.02 s2, 3details
#70.09 s3details
#8--3details
#9--3details

Code

#include <iostream>
int n;
int visited = 0;
int sum = 0;
int arr[1001][1001];
int gps[1001][1001]={0};
int gps2[3][1001];
int route(int x, int y){
if (gps[x][y]!=0)
return gps[x][y];
int gpsdie = (gps2[0][y]<gps2[1][x]) ? gps2[0][y] : gps2[1][x];
if (arr[x][y]==gpsdie){
gps[x][y] = 1;
visited++;
sum++;
return 1;
}
int routes = 1;
for (int i=0;i<n;i++){
if (y!=i){
if (arr[x][i]<arr[x][y])
routes += route(x,i);
//if (routes>1000000007)
routes %= 1000000007;
}
if (x!=i){
if (arr[i][y]<arr[x][y])
routes += route(i,y);
//if (routes>1000000007)
routes %= 1000000007;
}
}
gps[x][y] = routes;
visited++;
sum += routes;
if (sum>=1000000007)
sum %= 1000000007;
return routes;
}
int main(){
std::cin.sync_with_stdio(false);
std::cin >> n;
for (int i=0;i<n;i++){
for (int j=0;j<n;j++){
std::cin >> arr[i][j];
}
}
int xd = n*n;
int small = 1000001;
for (int i=0;i<n;i++){
for (int j=0;j<n;j++){
if (arr[j][i]<small)
small = arr[j][i];
}
for (int j=0;j<n;j++){
gps2[j][i] = small;
}
small = 1000001;
for (int j=0;j<n;j++){
if (arr[i][j]<small)
small = arr[i][j];
}
for (int j=0;j<n;j++){
gps2[i][j] = small;
}
small = 1000001;
}
for (int i=0;i<n;i++){
for (int j=0;j<n;j++){
route(i,j);
if (visited==xd)
goto results;
}
}
results:
std::cout << sum << "\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:

input
3
1 2 3
6 5 4
7 8 9

correct output
135

user output
73

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:

input
100
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
187458477

user output
192390445

Test 6

Group: 2, 3

Verdict:

input
100
2995 8734 1018 2513 7971 5063 ...

correct output
964692694

user output
390817079

Test 7

Group: 3

Verdict:

input
1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
1000000

user output
997012

Test 8

Group: 3

Verdict:

input
1000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
229147081

user output
(empty)

Test 9

Group: 3

Verdict:

input
1000
520283 805991 492643 75254 527...

correct output
951147313

user output
(empty)