제출 #33983

#제출 시각아이디문제언어결과실행 시간메모리
33983mohammad_kilani구슬과 끈 (APIO14_beads)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define mod 1000000007 #define oo 2000000000 const int N = 210; int n; long long dp[N][2]; vector< pair<int,int> > g[N]; long long solve(int node,int prnt,int len,bool b){ if(dp[node][b] != -1) return dp[node][b]; long long sum = 0 ; dp[node][b] = 0 ; for(int i=0;i<g[node].size();i++){ int newnode = g[node][i].first; int newlen = g[node][i].second; if(newnode != prnt){ long long cur = solve(newnode,node,newlen,0); sum+= cur; } } dp[node][b] = sum; if(b == 0){ for(int i=0;i<g[node].size();i++){ int newnode = g[node][i].first; int newlen = g[node][i].second; if(newnode == prnt) continue; long long cur = solve(newnode,node,newlen,0); long long cur2 = solve(newnode,node,newlen,1); dp[node][b] = max(dp[node][b],sum - cur + cur2 + newlen + len); } for(int i=0;i<g[node].size();i++){ for(int j=i+1;j<g[node].size();j++){ int node1 = g[node][i].first; int node2 = g[node][j].first; int len1 = g[node][i].second; int len2 = g[node][j].second; if(node1 == prnt || node2 == prnt) continue; long long cur1 = solve(node1,node,len1,0); long long cur2 = solve(node1,node,len1,1); long long cur3 = solve(node2,node,len2,0); long long cur4 = solve(node2,node,len2,1); dp[node][b] = max(dp[node][b],sum + cur4 - cur3 + len1 + cur2 - cur1 + len2); } } } return dp[node][b]; } int main() { //freopen("in.txt","r",stdin); scanf("%d",&n); for(int i=0;i<n-1;i++){ int u , v, w; scanf("%d%d%d",&u,&v,&w); g[u].push_back(make_pair(v,w)); g[v].push_back(make_pair(u,w)); } long long ans = 0 ; for(int i=1;i<=n;i++){ if(g[node][i].size() == 1){ memset(dp,-1,sizeof(dp)); ans = max(ans,solve(i,-1,0,1)); break; } } cout << ans << endl; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

beads.cpp: In function 'long long int solve(int, int, int, bool)':
beads.cpp:14:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(int i=0;i<g[node].size();i++){
                  ~^~~~~~~~~~~~~~~
beads.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<g[node].size();i++){
                   ~^~~~~~~~~~~~~~~
beads.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<g[node].size();i++){
                   ~^~~~~~~~~~~~~~~
beads.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
        for(int j=i+1;j<g[node].size();j++){
                      ~^~~~~~~~~~~~~~~
beads.cpp: In function 'int main()':
beads.cpp:61:12: error: 'node' was not declared in this scope
       if(g[node][i].size() == 1){
            ^~~~
beads.cpp:61:12: note: suggested alternative: 'modf'
       if(g[node][i].size() == 1){
            ^~~~
            modf
beads.cpp:52:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d",&n);
      ~~~~~^~~~~~~~~
beads.cpp:55:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d%d%d",&u,&v,&w);
       ~~~~~^~~~~~~~~~~~~~~~~~~