Submission #203974

#	Time	Username	Problem	Language	Result	Execution time	Memory
203974		awlintqaa	Igra (COCI17_igra)	C++14	100 / 100	7 ms	376 KiB

igra

#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 200
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll mod=1e9+7;
const ll inf= 4e18;
const ld pai=acos(-1);
int n ;
string s1,s2;
int NUM [3], num [3];
int RET [3], ret [3];
int check () {
        for ( int k =0 ;k <= NUM[1] ; k ++ ) {
                for ( int j =0 ;j < 3 ;j ++ )  {
                        RET [j] = NUM [j ];
                        ret [j] = num [j ];
                }
                RET [1]  -= min ( k , ret[0]);
                ret [0] -= min ( k ,ret[0]);
                RET [2] -= min( RET[2] , ret[0]);
                int  x = min (RET[1] , ret[2] );
                RET [1] -= x ;
                ret [2] -= x ;
                x = min ( RET [0] , ret[2]);
                RET [0] -= x;
                ret[2] -= x;
                if ( RET[0] + RET[2] == ret[1] ) return  1;
        }
        return 0 ;
}
int main(){
        cin >> n ;
        cin >> s1 >> s2;
        for ( int i =0 ;i < s1.size() ;i ++ ){
                num [s1[i]-'a'] ++ ;
        }
        for ( int i =0; i < s2.size() ;i ++ ){
                NUM [s2[i]-'a'] ++ ;
        }
        string ans = "" ;
        for ( int i =0 ;i < n ;i++ ){
                int z = 0 ;
                for ( int j =0 ;j < 3 ;j ++ ){
                        if ( s2 [i]-'a'  == j || z  || num[j] == 0 )C;
                        NUM [ s2[i] - 'a' ] --;
                        num [ j ]--;
                        if ( check() ) {
                                z=1;
                                ans += (char) (j+'a');
                        }
                        NUM [s2[i] - 'a' ] ++;
                        num [j] ++;
                }
                NUM [s2[i]-'a'] -- ;
                num [ ans [i] -'a' ] --;
        }
        cout << ans << endl;
}

Compilation message (stderr)

igra.cpp: In function 'int main()':
igra.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for ( int i =0 ;i < s1.size() ;i ++ ){
                         ~~^~~~~~~~~~~
igra.cpp:58:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for ( int i =0; i < s2.size() ;i ++ ){
                         ~~^~~~~~~~~~~

• Subtask 1: 100 / 100