Submission #1187408

#	Time	Username	Problem	Language	Result	Execution time	Memory
1187408		CodeLakVN	Magneti (COCI21_magneti)	C++20	10 / 110	4 ms	2628 KiB

Main

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

#define task "21_magneti"
#define no "NO"
#define yes "YES"
#define F first
#define S second
#define vec vector
#define _mp make_pair
#define ii pair<int, int>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define evoid(val) return void(std::cout << val)
#define FOR(i, a, b) for(int i = (a); i <= (b); ++i)
#define FOD(i, b, a) for(int i = (b); i >= (a); --i)

const int MAX_L = (int)1e4 + 4;
const int MOD = (int)1e9 + 7;

int n, length;
int radius[55];

namespace sub1 {
    bool valid() {
        FOR(i, 1, n) if (radius[i] != radius[1]) return false;
        return true;
    }

    int dp[55][MAX_L], pre[MAX_L];

    void solve() {
        memset(dp, 0, sizeof(dp));
        FOR(i, 1, length) dp[1][i] = 1, pre[i] = i;
        FOR(i, 2, n) {
            FOR(l, 1, length) if (l > radius[1]) dp[i][l] = pre[l - radius[1]];  
            FOR(l, 1, length) pre[l] = (pre[l - 1] + dp[i][l]) % MOD;
        }

        int ans = 1;
        FOR(i, 1, n) ans = 1LL * ans * i % MOD;
        int sum = 0;
        FOR(l, 1, length) sum = (sum + dp[n][l]) % MOD;
        ans = 1LL * ans * sum % MOD;

        cout << ans << "\n";
    }
}

namespace sub2 {
    bool valid() {
        return n <= 10;
    }

    void solve() {
        
    }
}

void solve() {
    cin >> n >> length;
    FOR(i, 1, n) cin >> radius[i];

    if (sub1::valid()) sub1::solve();
}

int32_t main() {
    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    bool multitest = 0;
    int numTest = 1;
    if (multitest) cin >> numTest;

    while (numTest--) {
        solve();
    }

    return 0;
}

/* Lak lu theo dieu nhac!!!! */

Compilation message (stderr)

Main.cpp: In function 'int32_t main()':
Main.cpp:69:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:70:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 50