Submission #11574

#	Time	Username	Problem	Language	Result	Execution time	Memory
11574		gs14004	Sequence (BOI14_sequence)	C++98	67 / 100	1000 ms	2144 KiB

sequence

#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;

int n;
long long res = 1e16, p[17];

void solve(vector<int> bit, long long cb, int depth, int had_zero){
    if(cb >= res) return;
    if(bit.size() == 1){
        int r = bit[0];
        if(r == 0){
            if(cb == 0 || had_zero) cb += p[depth];
        }
        else if(r == 1){
            cb += p[depth] * 10;
        }
        else{
            vector<int> v;
            for (int i=9; i>=0; i--) {
                if((r>>i)&1) v.push_back(i);
            }
            if(v.back() == 0){
                swap(v[v.size() - 2],v.back());
            }
            for (int i=0; i<v.size(); i++) {
                cb += p[depth] * v[i];
                depth++;
            }
        }
        res = min(res,cb);
        return;
    }
    for (int i=0; i<10; i++) {
        int gz = 0;
        vector<int> v2;
        int piv = i;
        v2.push_back(0);
        for (int j=0; j<bit.size(); j++) {
            if(bit[j]&1 && piv == 0) gz = 1;
            v2.back() |= (bit[j] & (~(1<<piv)));
            if(piv == 9 && j != bit.size() - 1){
                v2.push_back(0);
                piv = -1;
            }
            piv++;
        }
        solve(v2,cb + p[depth] * i,depth+1,gz);
    }
}

int main(){
    vector<int> v;
    scanf("%d",&n);
    p[0] = 1;
    for (int i=1; i<17; i++) {
        p[i] = p[i-1] * 10;
    }
    for (int i=0; i<n; i++) {
        int t;
        scanf("%d",&t);
        v.push_back(1<<t);
    }
    solve(v,0,0,0);
    printf("%lld",res);
}

• Subtask 1: 9 / 9
• Subtask 2: 33 / 33
• Subtask 3: 25 / 25
• Subtask 4: 0 / 33