Submission #397718

#	Time	Username	Problem	Language	Result	Execution time	Memory
397718		ly20	Split the Attractions (IOI19_split)	C++17	18 / 100	105 ms	13256 KiB

split

#include "split.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 112345;
bool vl = false;
int resp[MAXN];
vector <int> grafo[MAXN];
int p1, p2;
int N;
int marc[MAXN];
int vz;
void dfs2(int v) {
    vl = true;
    if(p1 > 0) {
        p1--;
        resp[v] = 1;
    }
    else {
        vz = v;
        return;
    }
    marc[v] = 1;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(marc[viz] == 1) continue;
        dfs2(viz);
    }
}
void dfs3(int v) {
    vl = true;
    if(p2 > 0) {
        p2--;
        resp[v] = 2;
    }
    else return;
    marc[v] = 1;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(marc[viz] == 1) continue;
        dfs3(viz);
    }
}
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
    N = n;
	vector<int> res;
	int m = p.size();
	p1 = a; p2 = b;
	for(int i = 0; i < m; i++) {
        int a1 = p[i], b1 = q[i];
        grafo[a1].push_back(b1); grafo[b1].push_back(a1);
	}
    int id = 0, mn = n;
    for(int i = 0; i < n; i++) {
        if(grafo[i].size() < mn) {
            mn = grafo[i].size();
            id = i;
        }
    }
    dfs2(id);
    dfs3(vz);
    for(int i = 0; i < n; i++) {
        if(vl && resp[i] == 0) resp[i] = 3;
        res.push_back(resp[i]);
    }
	return res;
}

Compilation message (stderr)

split.cpp: In function 'void dfs2(int)':
split.cpp:23:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
split.cpp: In function 'void dfs3(int)':
split.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:54:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   54 |         if(grafo[i].size() < mn) {
      |            ~~~~~~~~~~~~~~~~^~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36