제출 #755715

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
755715		ElyesChaabouni	A Huge Tower (CEOI10_tower)	C++17	0 / 100	183 ms	262144 KiB

tower

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define vi vector<int>
#define ve vector
#define ll long long
#define vl vector<ll>
#define vll vector<pair<ll,ll>>
#define onbit __builtin_popcount
#define ii pair<int,int>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 1e18
#define eps 1e-7
#define eps1 1e-2
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 1e5+5
using namespace std;
using namespace __gnu_pbds;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const ll MOD = 1e9+9;
const int nax = 1e3+5;
const int MAX_VAL = 1e6;
double PI=3.14159265359;
int arx[8]={1,1,0,-1,-1,-1, 0, 1};
int ary[8]={0,1,1, 1, 0,-1,-1,-1};
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
int main(){
    optimise;
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    //setIO("redistricting");
    int n,d;
    cin>>n>>d;
    int tab[n];
    for (int i = 0; i < n; ++i)
    {
        cin>>tab[i];
    }
    ll dp[(1<<n)][n];
    memset(dp,0,sizeof dp);
    for (int i = 0; i < n; ++i)
    {
        dp[(1<<i)][i]=1;
    }
    for (int i = 2; i < (1<<n); ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if (i&(1<<j)){
                int prev=i-(1<<j);
                for (int k = 0; k < n; ++k)
                {
                    if (prev&(1<<k)){
                        if (tab[k]-tab[j]>=-d){
                            dp[i][j]+=dp[prev][k];
                            dp[i][j]%=MOD;
                        }
                    }
                }
            }
        }     
    }
    ll res=0;
    for (int i = 0; i < n; ++i)
    {
        res+=dp[(1<<n)-1][i];
        res%=MOD;
    }cout<<res<<endl;
}

컴파일 시 표준 에러 (stderr) 메시지

tower.cpp: In function 'void setIO(std::string)':
tower.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tower.cpp:34:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tower.cpp: In function 'int main()':
tower.cpp:39:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
tower.cpp:40:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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