Submission #635817

#	Time	Username	Problem	Language	Result	Execution time	Memory
635817		zeroesandones	Jump (BOI06_jump)	C++17	70 / 100	1 ms	340 KiB

jump

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll, ll> pi;

#define FOR(i, j, k) for (ll i = j; i < (ll) k; ++i)
#define FORD(i, j, k) for (ll i = j; i >= (ll) k; --i)
#define nl "\n"
#define all(x) (x).begin(), (x).end()

#define sc second
#define fr first
#define pb push_back

string add(string a, string b) {
    if(a.length() < b.length()) swap(a, b);

    while(b.length() < a.length())
        b = "0" + b;

    string ans;
    int carry = 0;

    FORD(i, a.length() - 1, 0) {
        int c = (a[i] - '0') + (b[i] - '0') + carry;
        char num = (char) (c % 10 + (int)('0'));
        ans =  num + ans;
        carry = c / 10;
    }

    if(carry) {
        char num = (char) (carry + (int)('0'));
        ans = num + ans;
    }

    return ans;
}

void solve()
{
    int n;
    cin >> n;

    int a[n][n];
    FOR(i, 0, n){
        FOR(j, 0, n) {
            cin >> a[i][j];
        }
    }

    ll dp[n][n] = {};
    dp[0][0] = 1;
    FOR(i, 0, n) {
        FOR(j, 0, n) {
            if(a[i][j] == 0)
                continue;
            if(i + a[i][j] < n)
                dp[i + a[i][j]][j] += dp[i][j];
            if(j + a[i][j] < n)
                dp[i][j + a[i][j]] += dp[i][j];
        }
    }

    // FOR(i, 0, n) {
        // FOR(j, 0, n){
            // cout << dp[i][j] << " ";
        // }
        // cout << nl;
    // }
    cout << dp[n - 1][n - 1] << nl;
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    ll t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }
}

• Subtask 1: 70 / 100