Submission #170530

#	Time	Username	Problem	Language	Result	Execution time	Memory
170530		Swan	Bali Sculptures (APIO15_sculpture)	C++14	46 / 100	1077 ms	6296 KiB

sculpture

#include <bits/stdc++.h>
#define stop system("pause")
#define stop2 char o; cin >> o
#define INP freopen("pcb.in","r",stdin)
#define OUTP freopen ("pcb.out","w",stdout)
#define int long long
using namespace std;

const int maxn = 210;

set<int> dp[maxn][maxn];
int ans[maxn][maxn];
set<int> ::iterator it;

bool prosev(int x,int y,int need){
    vector<int> bad;
    for(it = dp[x][y].begin();it!=dp[x][y].end();it++){
        if(*it == need)return 0;
        int a = need^(need|(*it));
        int b = (*it)^((*it)|need);
        if(!a){
            return 0;
        }
        if(!b){
            bad.push_back(*it);
        }
    }
    for(int i(0); i < bad.size();i++){
        dp[x][y].erase(dp[x][y].find(bad[i]));
    }
    return 1;
}

main(){
    ios_base::sync_with_stdio(0);
    int n,a,b; cin >> n >> a >> b;
    vector<int> v;
    v.push_back(0);
    //srand(time(0));
    for(int i(1); i <= n;i++){
        int x;cin>>x;
        v.push_back(x);
    }
    dp[0][0].insert(0);
    for(int i(0);i<=n;i++){
        for(int j(0);j<=n;j++){
            ans[i][j] = 1e16;
        }
    }
    for(int k(1);k<=b;k++){
        for(int i(1); i <=n;i++){
            int sum = 0;
            //cout << k << ' ' << i << ' ' << ans[k][i] << endl;
            for(int to(i);to > 0;to--){
                sum+=v[to];
                for(auto&a : dp[k-1][to-1]){
                    bool f = prosev(k,i,sum|a);
                    if(f)dp[k][i].insert(sum|a);
                    ans[k][i] = min(ans[k][i],(sum|a));
                }
            }
            //cout << k << ' ' << i << ' ' << ans[k][i] << endl;
            //prosev(k,i);
        }
    }
    int res = 1e17;
    for(int i(a);i<=b;i++){
        //cout << i << ' ' << ans[i][n] << endl;
        res = min(res,ans[i][n]);
    }
    cout << res;
}

/*
6 1 3
8 1 2 1 5 4
100 1 100
5 1 5
5 4 3 2 1
*/

Compilation message (stderr)

sculpture.cpp: In function 'bool prosev(long long int, long long int, long long int)':
sculpture.cpp:28:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i(0); i < bad.size();i++){
                   ~~^~~~~~~~~~~~
sculpture.cpp: At global scope:
sculpture.cpp:34:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

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