Submission #418828

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
418828	2021-06-06 01:26:45	ly20	Village (BOI20_village)	C++17	100 / 100	132 ms	20492 KiB

Village

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 112345;
vector <int> grafo[MAXN];
long long mn, mx;
int rmn[MAXN], rmx[MAXN];
int cur[MAXN];
int grau[MAXN];
int marc[MAXN];
int dist[MAXN];
int sub[MAXN];
int n;
vector <int> cmp[MAXN];
int cm;
void dfs(int v, int p) {
    sub[v] = 1;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        dfs(viz, v);
        sub[v] += sub[viz];
    }
    mx += min(sub[v], n - sub[v]);
    //printf("%d\n", sub[v]);
}
int dfs2(int v, int p) {
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        if(sub[viz] > n / 2) return dfs2(viz, v);
 
 
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Compilation message (stderr)

Village.cpp: In function 'void dfs(int, int)':
Village.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'int dfs2(int, int)':
Village.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'void dfs3(int, int)':
Village.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'int main()':
Village.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for(int i = 0 ;i < grafo[cur].size(); i++) {
      |                        ~~^~~~~~~~~~~~~~~~~~~
Village.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i = 0; i < grafo[cn].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~~
Village.cpp:80:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   80 |         if(cmp[i].size() < mt) {
      |            ~~~~~~~~~~~~~~^~~~
Village.cpp:88:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |         for(int j = 0; j < cmp[i].size(); j++) temp.push_back(cmp[i][j]);
      |                        ~~^~~~~~~~~~~~~~~
Village.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |     for(int i = 0; i < temp.size() / 2; i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
Village.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Village.cpp:46:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         scanf("%d %d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 38 / 38
• Subtask 3: 50 / 50