제출 #40535

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
40535		mohammad_kilani	구슬과 끈 (APIO14_beads)	C++14	컴파일 에러	0 ms	0 KiB

beads

#include <bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define oo 1000000000
const double PI = acos(-1);
const int N = 100010;
int n , dp[N][2];
vector < pair<int,int> > g[N];

int main(){
   scanf("%d",&n);
   for(int i=0;i<n-1;i++){
   	int u , v;
   	scanf("%d%d",&u,&v);
   	g[u].push_back(v);
   	g[v].push_back(u);
   }
   int ans = 0 , st = 0 , en = 0 , curnode , w , sum = 0 , mx = 0 , i = 0 , cnt = 0;
	    	for(int node=1;node<=n && cnt < 100;node++){
	    		if(g[node].size() == 1){
	    			cnt++;
	    			st = 0 , en = 0 ,sum = 0;
	    			for(i=1;i<=n;i++){
	    				in[i] = g[i].size() - (i != node);
	    				if(in[i] == 0)
	    					q[en++] = i;
	    			}
	    			while(st < en){
	    				curnode = q[st++];
	    				dp[curnode][1] = dp[curnode][0] = 0;
	    				sum = 0 , mx = -oo;
	    				for(i=0;i<g[curnode].size();i++){
	    					if(in[g[curnode][i].first] != 0){
	    						w = g[curnode][i].second;
	    						in[g[curnode][i].first]--;
	    						if(in[g[curnode][i].first] == 0){
	    							q[en++] = g[curnode][i].first;
	    						}
	    					}
	    					else{
	    						sum += max(dp[g[curnode][i].first][0],dp[g[curnode][i].first][1]);
	    						mx = max(mx,dp[g[curnode][i].first][1] + g[curnode][i].second - max(dp[g[curnode][i].first][0],dp[g[curnode][i].first][1]));
	    					}
	    				}
	    				dp[curnode][1] = sum;
	    				dp[curnode][0] = sum + mx + w;
	     
	    			}
	    			ans = max(ans,dp[node][1]);
	    		}
	    	}
	    	printf("%d\n",ans);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

beads.cpp: In function 'int main()':
beads.cpp:15:21: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(int&)'
     g[u].push_back(v);
                     ^
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/c++/7/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from beads.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:939:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(const value_type& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:939:7: note:   no known conversion for argument 1 from 'int' to 'const value_type& {aka const std::pair<int, int>&}'
/usr/include/c++/7/bits/stl_vector.h:953:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(value_type&& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:953:7: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}'
beads.cpp:16:21: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(int&)'
     g[v].push_back(u);
                     ^
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/c++/7/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:86,
                 from beads.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:939:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(const value_type& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:939:7: note:   no known conversion for argument 1 from 'int' to 'const value_type& {aka const std::pair<int, int>&}'
/usr/include/c++/7/bits/stl_vector.h:953:7: note: candidate: void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]
       push_back(value_type&& __x)
       ^~~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:953:7: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::pair<int, int> >::value_type&& {aka std::pair<int, int>&&}'
beads.cpp:24:10: error: 'in' was not declared in this scope
          in[i] = g[i].size() - (i != node);
          ^~
beads.cpp:24:10: note: suggested alternative: 'i'
          in[i] = g[i].size() - (i != node);
          ^~
          i
beads.cpp:26:11: error: 'q' was not declared in this scope
           q[en++] = i;
           ^
beads.cpp:29:20: error: 'q' was not declared in this scope
          curnode = q[st++];
                    ^
beads.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
          for(i=0;i<g[curnode].size();i++){
                  ~^~~~~~~~~~~~~~~~~~
beads.cpp:33:14: error: 'in' was not declared in this scope
           if(in[g[curnode][i].first] != 0){
              ^~
beads.cpp:33:14: note: suggested alternative: 'i'
           if(in[g[curnode][i].first] != 0){
              ^~
              i
beads.cpp:11:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&n);
    ~~~~~^~~~~~~~~
beads.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&u,&v);
     ~~~~~^~~~~~~~~~~~~~