제출 #591106

#제출 시각아이디문제언어결과실행 시간메모리
591106almothana05Split the Attractions (IOI19_split)C++14
컴파일 에러
0 ms0 KiB
#include "split.h" #include <cstdio> #include <cassert> using namespace std; #include "split.h" #include<bits/stdc++.h> #define mod 1000000007 using namespace std; vector<pair<int , int> >gru; vector<int> vis; vector<int>gr[500000]; int re , pl = -1 , maxi = mod , f[500000] ,pl2 , menge; int unt[300000] , ob[300000]; int dfs(int x){ int sub = 1; vis[x] = 1; for(int i = 0 ; i< gr[x].size() ; i ++){ int kind = gr[x][i]; if(vis[kind] == 0){ sub += dfs(kind); } else{ f[x] = kind; } } unt[x] = sub; ob[x] = menge - unt[x] + 1; return sub; } void dfs1(int x , int ins){ if(re <= 0){ return; } vis[x] = ins; re--; for(int i = 0 ; i < gr[x].size() ; i++){ int kind = gr[x][i]; if(vis[kind] == 0){ dfs1(kind , ins); } } } vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) { int root; menge = n; for(int i = 0 ;i < menge ; i++){ vis.push_back(0); } gru.push_back({a , 1}); gru.push_back({b , 2}); gru.push_back({c , 3}); sort(gru.begin() , gru.end()); for(int i = 0 ; i < p.size() ; i++){ gr[p[i]].push_back(q[i]); gr[q[i]].push_back(p[i]); } for(int i = 0 ; i < menge ; i++){ if(gr[i].size() > 1){ root = i; break; } } dfs(root); for(int x = 0 ; x < menge ; x++){ vis[x] = 0; for(int i = 0 ; i < gr[x].size() ; i++ ){ int kind = gr[x][i]; if(kind == f[x]){ if(unt[x] > gru[0].first && maxi > unt[x]){ maxi = unt[x]; pl = x; pl2 = kind; } } else{ if(menge - unt[kind] > gru[0].first && maxi > menge - unt[kind]){ maxi = menge - unt[kind]; pl = x; pl2 = kind; } } } } if(maxi == mod){ return vis; } vis[pl] = gru[0].second; re = gru[1].first; dfs1( pl2 , gru[1].second ); if(re > 0){ // assert(gru[2].first >= gru[1].first && gru[1].first > gru[0].first); for(int i = 0 ; i < menge ; i++){ vis[i] =0; } return vis; } re = gru[0].first; dfs1(pl , gru[0].second); for(int i = 0 ; i < menge ; i ++){ if(vis[i] == 0){ vis[i] = gru[2].second; } } return vis; } int main() { int n, m, a, b, c; assert(5 == scanf("%d%d%d%d%d", &n, &m, &a, &b, &c)); vector<int> p(m), q(m); for (int i=0; i<m; i++) assert(2 == scanf("%d%d", &p[i], &q[i])); fclose(stdin); vector<int> result = find_split(n, a, b, c, p, q); for (int i=0; i<(int)result.size(); i++) printf("%s%d", ((i>0)?" ":""), result[i]); printf("\n"); fclose(stdout); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

split.cpp: In function 'int dfs(int)':
split.cpp:26:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(int i = 0 ; i< gr[x].size() ; i ++){
      |                  ~^~~~~~~~~~~~~~
split.cpp: In function 'void dfs1(int, int)':
split.cpp:45:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for(int i = 0 ; i < gr[x].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~
split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:63:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |  for(int i = 0 ; i < p.size() ; i++){
      |                  ~~^~~~~~~~~~
split.cpp:76:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |   for(int i = 0 ; i < gr[x].size() ; i++ ){
      |                   ~~^~~~~~~~~~~~~~
split.cpp:73:5: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   73 |  dfs(root);
      |  ~~~^~~~~~
/usr/bin/ld: /tmp/ccqi7Y7v.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccYVfhOv.o:split.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status