CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:xenial
Submission time:2022-11-08 16:11:13 +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
#7ACCEPTED0.26 s3details
#8ACCEPTED0.22 s3details
#9ACCEPTED0.34 s3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:66:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         for (int i = 0; i < xp[cx].sz(); i++) {
      |                         ~~^~~~~~~~~~~~~
input/code.cpp:78:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |         for (int i = 0; i < yp[cy].sz(); i++) {
      |                         ~~^~~~~~~~~~~~~
input/code.cpp: In function 'void set_io(std::string)':
input/code.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen((filename + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:20...

Code

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define fi first
#define se second
#define sz size
#define rsz resize
#define ii pair<int,int>
#define vi vector<int>
#define vvi vector<vector<int>>
void set_io(string filename = "") {
ios::sync_with_stdio(0);
cin.tie(0);
if (filename != "") {
freopen((filename + ".in").c_str(), "r", stdin);
freopen((filename + ".out").c_str(), "w", stdout);
}
}
int N;
int main() {
set_io("");
cin >> N;
int map[N][N];
ll dp[N][N];
fill_n(&dp[0][0], N*N, 1);
vector<pair<int, ii>> s;
for (int i = 0; i < N; i++)
for (int j = 0; j < N; j++) {
cin >> map[j][i];
s.pb(make_pair(map[j][i], ii(j, i)));
}
sort(all(s));
int h = s[0].fi, i = 1;
for (auto &n : s) {
int c = n.fi, cx = n.se.fi, cy = n.se.se;
if (h < c) {
i++;
h = c;
}
n.fi = i;
map[cx][cy] = i;
}
vector<vector<ii>> xp(N), yp(N);
ll dpx[N], dpy[N];
fill_n(&dpx[0], N, 0);
fill_n(&dpy[0], N, 0);
ll ans = 0;
for (auto n : s) {
int cx = n.se.fi, cy = n.se.se, cw = n.fi;
ll cp = 1;
for (int i = 0; i < xp[cx].sz(); i++) {
int x = xp[cx][i].fi, y = xp[cx][i].se;
if (cw <= map[x][y]) break;
dpx[cx] = (dpx[cx] + dp[x][y]) % 1000000007;
xp[cx].erase(xp[cx].begin() + i);
i--;
}
cp = (cp + dpx[cx]) % 1000000007;
for (int i = 0; i < yp[cy].sz(); i++) {
int x = yp[cy][i].fi, y = yp[cy][i].se;
if (cw <= map[x][y]) break;
dpy[cy] = (dpy[cy] + dp[x][y]) % 1000000007;
yp[cy].erase(yp[cy].begin() + i);
i--;
}
cp = (cp + dpy[cy]) % 1000000007;
ans = (ans + cp) % 1000000007;
dp[cx][cy] = cp;
xp[cx].pb(ii(cx, cy));
yp[cy].pb(ii(cx, cy));
}
cout << ans << endl;
}

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