Submission #335444

#	Time	Username	Problem	Language	Result	Execution time	Memory
335444		Swan	Bali Sculptures (APIO15_sculpture)	C++14	50 / 100	86 ms	492 KiB

sculpture

#include <bits/stdc++.h>
#define stop system("pause")
#define INP freopen("balance.in","r",stdin)
#define OUTP freopen("balance.out","w",stdout)
#define int long long
using namespace std;


int n, a, b;
vector<int> v;
int dp[2001];

bool eq(int x, int mask){
    //cout << "qwe " << x << ' ' << mask << ' ' << (x & mask) << endl;
    return (x & mask) == 0;
}

bool bit(int x, int need){
    return x & (1ll << need);
}

bool check1(int mask, int dig){
    for(int i = 0; i < n;i++){
        dp[i] = -1;
        int mnres = INT_MAX;
        int sum = 0;
        for(int j = i; j >= 0;j--){
            sum+=v[j];
            if(eq(sum, mask) && !bit(sum, dig)){

                if(i == 0)mnres = 1;
                else{
                    if(dp[j - 1] == -1)continue;
                    mnres = min(mnres, dp[j - 1] + 1);
                }
            }
        }
        if(mnres!=INT_MAX){
            dp[i] = mnres;
        }
    }
    if(dp[n - 1] == -1){
        return 0;
    }
    if(dp[n - 1] > b)return 0;
    return 1;
}

main(){
    ios_base::sync_with_stdio(0);
    cin >> n >> a >> b;
    for(int i = 0; i < n;i++){
        int x; cin >> x;
        v.push_back(x);
    }
    int mask = 0;
    int ans = 0;
    //cout << "che " << (1 << 30) << endl;
    for(int b = 50; b >= 0;b--){
        mask^=(1ll << b);
        if(!check1(mask, b)){
            //cout << "bad " << endl;
            ans+=(1ll << b);
            mask^=(1ll << b);
        }
    }
    cout << ans;
    return 0;
}

/*
6 1 3
8 1 2 1 5 4
*/

Compilation message (stderr)

sculpture.cpp:49:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main(){
      |      ^

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 21 / 21
• Subtask 4: 0 / 25
• Subtask 5: 29 / 29