Submission #406873

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
406873	2021-05-18 06:46:08	Ruxandra985	The Xana coup (BOI21_xanadu)	C++14	100 / 100	109 ms	15312 KiB

xanadu

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#include <bits/stdc++.h>
#define DIMN 100010
using namespace std;
int dp[DIMN][2][2] , c[DIMN];
vector <int> v[DIMN];
void dfs (int nod , int tt){
    int i , vecin , par , impar , par_ant , ok = 0;
    for (i = 0 ; i < v[nod].size() ; i++){
        vecin = v[nod][i];
        if (vecin != tt){
            dfs(vecin , nod);
            ok = 1;
        }
    }
    if (!ok){ /// e frunza
        dp[nod][c[nod]][0] = 0;
        dp[nod][1 - c[nod]][1] = 1;
        return;
    }
    /// daca eu apas nod, toti vecinii trb sa fie 1
    par = 0;
    impar = DIMN;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

xanadu.cpp: In function 'void dfs(int, int)':
xanadu.cpp:10:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for (i = 0 ; i < v[nod].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~~
xanadu.cpp:31:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for (i = 0 ; i < v[nod].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~~
xanadu.cpp:56:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for (i = 0 ; i < v[nod].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~~
xanadu.cpp: In function 'int main()':
xanadu.cpp:87:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |     fscanf (fin,"%d",&n);
      |     ~~~~~~~^~~~~~~~~~~~~
xanadu.cpp:89:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         fscanf (fin,"%d%d",&x,&y);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~
xanadu.cpp:94:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |         fscanf (fin,"%d",&c[i]);
      |         ~~~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 40 / 40
• Subtask 5: 30 / 30