Submission #572965

#	Time	Username	Problem	Language	Result	Execution time	Memory
572965		AmirElarbi	Uplifting Excursion (BOI22_vault)	C++14	0 / 100	101 ms	237552 KiB

vault

#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#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 1e7
#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 2e5+5
using namespace std;
const int MOD = 1e4+7;
const int nax = 505;
const int nax2 = 30005;
typedef complex<int> Point;
#define X real()
#define Y imag()
int s[nax], dp[nax2*4][nax],m,l;
int solve(int sm, int pos){
    if(pos > 2*m){
        if(sm == l) return 0;
        else return -INF;
    }
    if(dp[sm+nax2][pos] != -1) return dp[sm+nax2][pos];
    dp[sm+nax2][pos] = -INF;
    for (int i = 0; i <= s[pos]; ++i)
    {
        int a = solve(sm+(pos-m)*i,pos+1);
        if(a!=-INF) dp[sm+nax2][pos] = max(dp[sm+nax2][pos], solve(sm+(pos-m)*i,pos+1)+ i );
    }
    return dp[sm+nax2][pos];
}
int main(){
    optimise;
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    cin >> m >> l;
    for (int i = 0; i < 2*m+1; ++i)
    {
        cin >> s[i];
    }
    int res = 0;
    memset(dp, -1,sizeof dp);
    res = solve(0,0);
    if(res == -INF) cout << "impossible" << endl;
    else cout << res << endl;
}

Compilation message (stderr)

vault.cpp: In function 'int main()':
vault.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
vault.cpp:46:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10