oj.uz

Submission #249663

# Submission time Handle Problem Language Result Execution time Memory
249663 2020-07-15T14:08:14 Z Mercenary Vještica (COCI16_vjestica) C++14
48 / 160
 2000 ms 1152 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>

#define pb push_back
#define mp make_pair
#define taskname "A"

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
typedef tree <int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

const int maxn = 5e5 + 5;
const int logn = log2(maxn) + 1;
int a[16][26];
int n;
int dp[1 << 16];
int get(int s){
    if(s == 0)return 0;
    int res = 0;
    for(int i = 0 ; i < 26 ; ++i){
        int tmp = 1e6;
        for(int j = 0 ; j < n ; ++j){
            if(s & (1 << j))tmp = min(tmp , a[j][i]);
        }
        res += tmp;
    }
    return res;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(taskname".INP","r")){
		freopen(taskname".INP", "r",stdin);
		freopen(taskname".OUT", "w",stdout);
    }
    cin >> n;
    for(int i = 0 ; i < n ; ++i){
        string s;cin >> s;
        for(auto & c : s)a[i][c - 'a']++;
    }
    memset(dp,123,sizeof dp);
    for(int i = 0 ; i < n ; ++i)dp[1 << i] = 0;
    for(int i = 0 ; i < (1 << n) ; ++i){
        int tmp = get(i);
        for(int j = (i - 1) & i ; j > 0 ; j = ((j - 1) & i)){
            dp[i] = min(dp[i] , dp[j] + dp[i ^ j] + get(j) + get(i ^ j) - 2 * get(i));
        }
    }
    cout << 1 + get((1 << n) - 1) + dp[(1 << n) - 1];
}

Compilation message

vjestica.cpp: In function 'int main()':
vjestica.cpp:50:13: warning: unused variable 'tmp' [-Wunused-variable]
         int tmp = get(i);
             ^~~
vjestica.cpp:39:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
vjestica.cpp:40:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
48.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 640 KB Output is correct
2 Correct 64 ms 644 KB Output is correct
3 Correct 62 ms 640 KB Output is correct
4 Execution timed out 2090 ms 640 KB Time limit exceeded
5 Execution timed out 2087 ms 640 KB Time limit exceeded
6 Execution timed out 2080 ms 896 KB Time limit exceeded
7 Execution timed out 2086 ms 1140 KB Time limit exceeded
8 Execution timed out 2081 ms 1152 KB Time limit exceeded
9 Execution timed out 2064 ms 1144 KB Time limit exceeded
10 Execution timed out 2090 ms 1152 KB Time limit exceeded