Cod sursa(job #2408425)

Utilizator stefdascalescuStefan Dascalescu stefdascalescu Data 17 aprilie 2019 22:39:39
Problema Cowfood Scor 54
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.9 kb
#include<bits/stdc++.h>
#define mod 3210121
using namespace std;
ifstream f("cowfood.in");
ofstream g("cowfood.out");
int k, s, n;
int nr[35][35];
int combi[10035][35];
int prf[10035][35];
int mx[35];
void comb()
{
    combi[0][0] = combi[1][0] = combi[1][1] = 1;
    for(int i = 2; i <= 10033; ++i)
    {
        combi[i][0] = 1;
        for(int j = 1; j <= 33; ++j)
        {
            combi[i][j] = (combi[i-1][j] + combi[i-1][j-1]);
            if(combi[i][j] >= mod)
                combi[i][j] -= mod;
        }
    }
    for(int i = 0; i <= k; ++i)
        for(int j = i; j <= 10033; ++j)
        {
            prf[j][i] = prf[j-1][i] + combi[j][i];
            if(prf[j][i] >= mod)
                prf[j][i] -= mod;
        }
}
int main()
{
    f >> k >> s >> n;
    for(int i = 1; i <= n; ++i)
        for(int j = 1; j <= k; ++j)
            f >> nr[i][j];
    comb();
    long long ans = 0;
    for(int j = s; j >= 2; --j)
    {
        ans = ans + combi[j + k - 1][k - 1] - k + mod;
        while(ans >= mod)
            ans -= mod;
    }
    for(int i = 1; i < (1<<n); ++i)
    {
        memset(mx, 0, sizeof(mx));
        bool bb = 0;
        for(int j = 0; j < n; ++j)
            if(i & (1<<j))
            {
                bb ^= 1;
                for(int p = 1; p <= k; ++p)
                    mx[p] = max(mx[p], nr[j+1][p]);
            }
        int ss = 0;
        for(int p = 1; p <= k; ++p)
            ss += mx[p];
        if(ss <= s)
        {
            bool sc = bb;
            int pp = prf[s - ss + k - 1][k - 1];
            if(sc)
            {
                ans -= pp;
                if(ans < 0)
                    ans += mod;
            }
            else
            {
                ans += pp;
                if(ans >= mod)
                    ans -= mod;
            }
        }
    }
    g << ans;
    return 0;
}