제출 #432898

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
432898		REALITYNB	곤돌라 (IOI14_gondola)	C++17	컴파일 에러	0 ms	0 KiB

gondola

#include <bits/stdc++.h>
#include "gondola.h"
using namespace std;
int valid(int n ,int* a){
    set<int> el ;
    for(int i=0;i<n;i++) el.insert(a[i]) ;
    if(el.size()!=n) return 0 ;
    bool flg= 0 ;
    for(int i=0;i<n;i++){
        if(a[i]>n) continue;
        for(int j=i;j<n+i;j++){
            if(a[j%n]>n) continue ;
            if(a[j%n]==((a[i]+j-i)<=n?a[i]+j-i:a[i]+j-i-n)) continue ;
            return 0;
        }
        break ;
    }
    return 1 ;
}
int replacementSeq(int n , int* a , int* ans){
  /*  map<int,int> occ ;
    for(int i=0;i<n;i++) occ[a[i]]=i ;
    int res = 0 ;
    int start = n+1 , mx = 0 ;
    for(int i=0;i<n;i++) mx =max(mx,a[i]) ;
    if(mx<=n) return 0 ;
    int i = 0 ;
    int j= 0;
    while(1){
        if(occ.count(start)==0){
            ans[i]=j;
        }
        else{
            ans[i]=
        }
        if(start==mx) break ;
        ++start,++i ;
    }
*/
    return 1;
}
int countReplacement(int n,int* a){
    const int md = 1e9+9 ;
    if(valid(n,a)==0) return 0 ;
    int spots = 0 ;
    for(int i=0;i<n;i++) spots+=(a[i]>n) ;
    int ans = (spots==n?n:1), mx =  0 ;
    for(int i=0;i<n;i++) mx = max(mx,a[i]) ;
    set<int> vis ;
    for(int i=0;i<n;i++) vis.insert(a[i]) ;
    for(int i=n+1;i<=mx;i++){
        if(vis.count(i)) --spots ;
        else ans*=spots ;
        ans%=md ;
    }

    return ans ;
}

컴파일 시 표준 에러 (stderr) 메시지

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:7:17: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    7 |     if(el.size()!=n) return 0 ;
      |        ~~~~~~~~~^~~
gondola.cpp:8:10: warning: unused variable 'flg' [-Wunused-variable]
    8 |     bool flg= 0 ;
      |          ^~~
/usr/bin/ld: /tmp/ccgffhPz.o: in function `main':
grader.cpp:(.text.startup+0x132): undefined reference to `replacement'
collect2: error: ld returned 1 exit status