oj.uz

Submission #206982

# Submission time Handle Problem Language Result Execution time Memory
206982 2020-03-06T02:54:50 Z coldEr66 Tents (JOI18_tents) C++14
100 / 100
 158 ms 70904 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double lf;
typedef pair<ll,ll> ii;
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define RST(i,n) memset(i,n,sizeof i)
#define SZ(a) (int)a.size()
#define ALL(a) a.begin(),a.end()
#define X first
#define Y second
#define mkp make_pair
#define pb push_back
#define eb emplace_back
#define pob pop_back
#ifdef cold66
#define debug(...) do{\
    fprintf(stderr,"%s - %d (%s) = ",__PRETTY_FUNCTION__,__LINE__,#__VA_ARGS__);\
    _do(__VA_ARGS__);\
}while(0)
template<typename T>void _do(T &&_x){cerr<<_x<<endl;}
template<typename T,typename ...S> void _do(T &&_x,S &&..._t){cerr<<_x<<", ";_do(_t...);}
template<typename _a,typename _b> ostream& operator << (ostream &_s,const pair<_a,_b> &_p){return _s<<"("<<_p.X<<","<<_p.Y<<")";}
template<typename It> ostream& _OUTC(ostream &_s,It _ita,It _itb)
{
    _s<<"{";
    for(It _it=_ita;_it!=_itb;_it++)
    {
        _s<<(_it==_ita?"":",")<<*_it;
    }
    _s<<"}";
    return _s;
}
template<typename _a> ostream &operator << (ostream &_s,vector<_a> &_c){return _OUTC(_s,ALL(_c));}
template<typename _a> ostream &operator << (ostream &_s,set<_a> &_c){return _OUTC(_s,ALL(_c));}
template<typename _a,typename _b> ostream &operator << (ostream &_s,map<_a,_b> &_c){return _OUTC(_s,ALL(_c));}
template<typename _t> void pary(_t _a,_t _b){_OUTC(cerr,_a,_b);cerr<<endl;}
#define IOS()
#else
#define debug(...)
#define pary(...)
#define endl '\n'
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0);
#endif // cold66
//}
template<class T> inline bool chkmax(T &a, const T &b) { return b > a ? a = b, true : false; }
template<class T> inline bool chkmin(T &a, const T &b) { return b < a ? a = b, true : false; }
template<class T> using MaxHeap = priority_queue<T>;
template<class T> using MinHeap = priority_queue<T, vector<T>, greater<T>>;

const ll MAXn=3e3+5,MAXlg=__lg(MAXn)+2;
const ll MOD=1000000007;
const ll INF=0x3f3f3f3f;

ll dp[MAXn][MAXn];
ll mul(ll a,ll b){
    return a*b%MOD;
}
ll add(ll a,ll b){
    ll ret = a + b;
    if (ret >= MOD) ret -= MOD;
    return ret;
}
ll sub(ll a,ll b){
    ll ret = a-b;
    if (ret < 0) ret += MOD;
    return ret;
}
int main(){
    IOS();
    int n,m;
    cin >> n >> m;
    REP (i,n+1) {
        REP (j,m+1) {
            if (!i || !j) dp[i][j] = 1;
            else {
                dp[i][j] = dp[i][j-1];
                dp[i][j] = add(dp[i][j],mul(4,mul(i,dp[i-1][j-1])));
                if (i >= 2) dp[i][j] = add(dp[i][j],mul((i-1)*i/2,dp[i-2][j-1]));
                if (j >= 2) dp[i][j] = add(dp[i][j],mul(i*(j-1),dp[i-1][j-2]));
            }
            debug(i,j,dp[i][j]);
        }
    }
    dp[n][m] = sub(dp[n][m],1);
    cout << dp[n][m] << endl;
}

Subtask #1
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 1144 KB Output is correct
5 Correct 5 ms 764 KB Output is correct
6 Correct 5 ms 1400 KB Output is correct
7 Correct 5 ms 888 KB Output is correct
8 Correct 5 ms 1532 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 7 ms 2296 KB Output is correct

Subtask #2
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 1144 KB Output is correct
5 Correct 5 ms 764 KB Output is correct
6 Correct 5 ms 1400 KB Output is correct
7 Correct 5 ms 888 KB Output is correct
8 Correct 5 ms 1532 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 7 ms 2296 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 9 ms 9724 KB Output is correct
15 Correct 98 ms 55288 KB Output is correct
16 Correct 11 ms 4216 KB Output is correct
17 Correct 25 ms 12920 KB Output is correct
18 Correct 31 ms 17144 KB Output is correct
19 Correct 111 ms 62972 KB Output is correct
20 Correct 91 ms 50936 KB Output is correct
21 Correct 63 ms 33912 KB Output is correct
22 Correct 62 ms 35448 KB Output is correct
23 Correct 40 ms 27128 KB Output is correct
24 Correct 158 ms 70904 KB Output is correct
25 Correct 116 ms 61304 KB Output is correct
26 Correct 127 ms 66680 KB Output is correct
27 Correct 140 ms 68984 KB Output is correct