new collections

交互题

无话可说......

#include <bits/stdc++.h>using namespace std ;set < string> s ;double magic[7]={10.0,100.0,999.96,6325.61,9517.19,9950.67,9995.01};void solve () {string c ;for ( int i = 1 ; i <= 10000 ; ++ i ) {cout << "+" << endl ;fflush ( stdout ) ;cin >> c ;s.insert(c);}int x = ( int ) s.size () ;double ret = 1e9 ;int ans ;for(int i = 0 ; i < 7 ; i ++ ){        double now = fabs(1.0 * x - magic[i]);        if(now < ret) ret = now , ans = i ;    }    int fin = 1 ;    for(int i = 0 ; i <= ans ; i ++) fin *= 10;    printf("= %d\n",fin);    fflush ( stdout ) ;}int main () {solve () ;return 0 ;}