제출 #834745

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
834745		IS_Rushdi	열쇠 (IOI21_keys)	C++17	컴파일 에러	0 ms	0 KiB

keys

#include <bits/stdc++.h>
using namespace std;



vector<int> find_reachable(vector<int> r, vector<int> u, vector<int> v, vector<int> c) {
	vector<int> ans(r.size(), 1);
    int n = r.size();
    int m = u.size();
    vector<vector<vector<int>>>a;
    int mn = 1e9;
    vector<int>tmp(n);
    for(int i = 0; i < m; i++){
        a[v[i]][c[i]].push_back(u[i]);
        a[u[i]][c[i]].push_back(v[i]);
    }
    for(int i = 0; i < n; i++){
        vector<int>vis(n,-1);
        queue<int>q;
        set<int>keys;
        q.push(i);
        while(!q.empty()){
            int node = q.front();
            q.pop();
            if(vis[node] == keys.size()) continue;
            keys.insert(r[node]);
            for(int key : keys){
                while(a[node][key].size() > 0){
                    q.push(a[node][key].back());
                    a[node][key].pop_back();
                }
            }
        }
        for(int i = 0; i < n; i++){
            if(vis[i] != -1) tmp[i]++;
        }
        mn = min(mn,tmp[i]);
    }
    for(int i = 0; i < n; i++){
        if(tmp[i] == mn) ans[i] = 1;
        else ans[i] = 0;
    }
	return ans;
}

int main(){
    
}

컴파일 시 표준 에러 (stderr) 메시지

keys.cpp: In function 'std::vector<int> find_reachable(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
keys.cpp:25:26: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |             if(vis[node] == keys.size()) continue;
/usr/bin/ld: /tmp/ccxgf5q6.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc281cl9.o:keys.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status