//{ <defines>
#include <bits/stdc++.h>
using namespace std;
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,-O3")
#define fr(i, n) for(int i = 0; i < n; ++i)
#define fo(n) fr(i, n)
#define re return
#define ef else if
#define ifn(x) if(!(x))
#define _ << ' ' <<
#define ft first
#define sd second
#define ve vector
#define pb push_back
#define eb emplace_back
#define sz(x) int((x).size())
#define ip2(x) (1 << (x))
#define lp2(x) (1ll << (x))
#define bnd(x) x.begin(), x.end()
#define clr(x, y) memset((x), (y), sizeof (x))
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef ve<int> vi;
inline ll time() {re chrono :: system_clock().now().time_since_epoch().count();}
mt19937 rnd(time());
mt19937_64 RND(time());
template<typename t> inline void umin(t &a, t b) {a = min(a, b);}
template<typename t> inline void umax(t &a, t b) {a = max(a, b);}
int md = 1e9 + 7;
inline int m_add(int&a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;}
inline int m_sum(int a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;}
inline int m_mul(int&a, int b) {re a = 1ll * a * b % md;}
inline int m_prod(int a, int b) {re 1ll * a * b % md;}
int m_bpow(ll A, ll b) {
int a = A % md;
ll ans = 1;
for(ll p = lp2(63 - __builtin_clzll(b)); p; p >>= 1) {
(ans *= ans) %= md;
if(p & b)
(ans *= a) %= md;
}
re ans;
}
//const ld pi = arg(complex<ld>(-1, 0));
//const ld pi2 = pi + pi;
const int oo = 2e9;
const ll OO = 4e18;
//} </defines>
const int N = 305;
int r, s, n;
typedef list<pii> f;
void merge(const f &a, const f &b, f &ans) {
auto it = a.begin(), e = a.end();
for(const pii &s : b) {
for(; it != e && it->ft < s.ft; ++it) ans.push_back(*it);
ans.push_back(s);
for(; it != e && it->ft == s.ft; ++it) (ans.back().sd += it->sd) %= md;
}
for(; it != e; ++it) ans.push_back(*it);
}
void divide(f &a, int k) {
if(k == 1) re;
int j = k - 1;
for(pii &u : a) (u.ft += j) /= k;
auto it = a.begin();
auto pr = it;
it++;
while(it != a.end()) {
if(it->ft == pr->ft) {
(pr->sd += it->sd) %= md;
it = a.erase(it);
} else {
pr = it;
it++;
}
}
}
void solve() {
cin >> r >> s >> n;
f dp[r][s];
int a[r][s];
fo(r) fr(j, s) cin >> a[i][j];
for(int i = r - 1; ~i; --i) {
for(int j = s - 1; ~j; --j) {
if(i + 1 == r) {
if(j + 1 == s) {
dp[i][j].push_back({n, 1});
} else {
dp[i][j] = dp[i][j + 1];
}
} ef(j + 1 == s) {
dp[i][j] = dp[i + 1][j];
} else {
merge(dp[i + 1][j], dp[i][j + 1], dp[i][j]);
dp[i + 1][j].resize(0);
}
divide(dp[i][j], a[i][j]);
}
}
int ans = 0;
for(pii &t : dp[0][0]) if(t.ft == 1) ans = t.sd;
cout << ans << endl;
}
int main() {
#ifdef _LOCAL
freopen("in.txt", "r", stdin);
int tests; cin >> tests;
for(int test = 1; test <= tests; ++test) {
cerr << test << " {\n";
solve();
cerr << "}\n\n";
}
#else
//freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);
ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
solve();
#endif
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
103 ms |
3192 KB |
Output is correct |
| 2 |
Correct |
16 ms |
2816 KB |
Output is correct |
| 3 |
Correct |
152 ms |
1792 KB |
Output is correct |
| 4 |
Correct |
130 ms |
1664 KB |
Output is correct |
| 5 |
Correct |
152 ms |
2296 KB |
Output is correct |
| 6 |
Correct |
464 ms |
4856 KB |
Output is correct |
| 7 |
Correct |
15 ms |
640 KB |
Output is correct |
| 8 |
Execution timed out |
6045 ms |
14456 KB |
Time limit exceeded |
| 9 |
Execution timed out |
6068 ms |
20228 KB |
Time limit exceeded |
| 10 |
Correct |
438 ms |
4348 KB |
Output is correct |
