Submission #851546

#	Time	Username	Problem	Language	Result	Execution time	Memory
851546		MilosMilutinovic	Password (RMI18_password)	C++17	Compilation error	0 ms	0 KiB

password

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef basic_string<int> B;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
mt19937 mrand(random_device{}()); 
const ll mod=1000000007;
int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

int cnt[30];

int query(string s) {
	rep(i,0,SZ(s)) printf("%c",s[i]); puts("");
	int x;
	scanf("%d",&x);
	return x;
}

string guess(int n,int s) {
	rep(i,0,s) {
		cnt[i]=query(string(n,(char)('a'+i)));
	}
	string res="";
	rep(i,0,n) {
		VI f;
		rep(j,0,26) if (cnt[j]>0) f.pb(j);
		int c=f[0];
		rep(j,1,SZ(f)) {
			string str=res;
			str+=(char)('a'+c);
			rep(k,0,cnt[f[j]]) str+=(char)('a'+f[j]);
			int qv=query(str);
			if (qv!=cnt[f[j]]+SZ(res)+1) {
				c=f[j];
			}
		}
		res+=(char)('a'+c);
		cnt[c]-=1;
	}
	return res;
}

Compilation message (stderr)

password.cpp: In function 'int query(std::string)':
password.cpp:3:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    3 | #define rep(i,a,n) for (int i=a;i<n;i++)
      |                    ^~~
password.cpp:27:2: note: in expansion of macro 'rep'
   27 |  rep(i,0,SZ(s)) printf("%c",s[i]); puts("");
      |  ^~~
password.cpp:27:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   27 |  rep(i,0,SZ(s)) printf("%c",s[i]); puts("");
      |                                    ^~~~
password.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |  scanf("%d",&x);
      |  ~~~~~^~~~~~~~~
/usr/bin/ld: /tmp/ccq95pTf.o: in function `query(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x80): multiple definition of `query(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccpOFqRe.o:password.cpp:(.text+0x2a0): first defined here
collect2: error: ld returned 1 exit status