Submission #937509

#	Time	Username	Problem	Language	Result	Execution time	Memory
937509		pan	Mobitel (COCI19_mobitel)	C++17	130 / 130	1375 ms	28408 KiB

mobitel

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//#include "bits_stdc++.h"
#define x first
#define y second
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define input(x) scanf("%lld", &x);
#define input2(x, y) scanf("%lld%lld", &x, &y);
#define input3(x, y, z) scanf("%lld%lld%lld", &x, &y, &z);
#define input4(x, y, z, a) scanf("%lld%lld%lld%lld", &x, &y, &z, &a);
#define print(x, y) printf("%lld%c", x, y);
#define show(x) cerr << #x << " is " << x << endl;
#define show2(x,y) cerr << #x << " is " << x << " " << #y << " is " << y << endl;
#define show3(x,y,z) cerr << #x << " is " << x << " " << #y << " is " << y << " " << #z << " is " << z << endl;
#define discretize(x) sort(x.begin(), x.end()); x.erase(unique(x.begin(), x.end()), x.end());
using namespace std;
//using namespace __gnu_pbds;
//#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
//#define ordered_multiset tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
typedef long long ll;
typedef long double ld;
typedef pair<ld, ll> pd;
typedef pair<string, ll> psl;
typedef pair<ll, ll> pi;
typedef pair<ll, pi> pii;
ll const mod = 1e9+7;
int main()
{
	ll r,s,n;
	input3(r,s,n);
	ll table[r+1][s+1], conv[n+1];
	vector<ll> dis;
	for (ll i=1; i<=r; ++i) for (ll j=1; j<=s; ++j) input(table[i][j]);
	for (ll i=1; i<=n; ++i) dis.pb((n-1)/i);
	discretize(dis);
	for (ll i=0; i<dis.size(); ++i) conv[dis[i]] = i;
	ll prevv[305][2005];
	for (ll i=0; i<=s; ++i) for (ll j=0; j<dis.size(); ++j) prevv[i][j] = 0;
	for (ll i=1; i<=r; ++i)
	{
		ll dp[305][2005];
		for (ll i=0; i<=s; ++i) for (ll j=0; j<dis.size(); ++j) dp[i][j] = 0;
		for (ll j=1; j<=s; ++j)
		{
			if (i==1 && j==1) dp[j][conv[((n-1)/table[i][j])]]+=1;
			for (ll k=0; k<dis.size(); ++k)
			{
				dp[j][conv[dis[k]/table[i][j]]] = (dp[j][conv[dis[k]/table[i][j]]] + prevv[j][k])%mod;
				dp[j][conv[dis[k]/table[i][j]]] = (dp[j][conv[dis[k]/table[i][j]]] + dp[j-1][k])%mod;
			}
		}
		swap(prevv, dp);
	}
	print(prevv[s][conv[0]], '\n');
	return 0;
}

Compilation message (stderr)

mobitel.cpp: In function 'int main()':
mobitel.cpp:40:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for (ll i=0; i<dis.size(); ++i) conv[dis[i]] = i;
      |               ~^~~~~~~~~~~
mobitel.cpp:42:40: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for (ll i=0; i<=s; ++i) for (ll j=0; j<dis.size(); ++j) prevv[i][j] = 0;
      |                                       ~^~~~~~~~~~~
mobitel.cpp:46:41: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |   for (ll i=0; i<=s; ++i) for (ll j=0; j<dis.size(); ++j) dp[i][j] = 0;
      |                                        ~^~~~~~~~~~~
mobitel.cpp:50:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |    for (ll k=0; k<dis.size(); ++k)
      |                 ~^~~~~~~~~~~
mobitel.cpp:13:30: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define input3(x, y, z) scanf("%lld%lld%lld", &x, &y, &z);
      |                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
mobitel.cpp:34:2: note: in expansion of macro 'input3'
   34 |  input3(r,s,n);
      |  ^~~~~~
mobitel.cpp:11:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
mobitel.cpp:37:50: note: in expansion of macro 'input'
   37 |  for (ll i=1; i<=r; ++i) for (ll j=1; j<=s; ++j) input(table[i][j]);
      |                                                  ^~~~~

• Subtask 1: 130 / 130