Submission #433576

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
433576	2021-06-20 07:47:49	sean617	Connecting Supertrees (IOI20_supertrees)	C++17	100 / 100	273 ms	25160 KiB

supertrees

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#include "supertrees.h"
#include <vector>
#include <cstring>
#define N 1005
using namespace std;
int n, cnt, bu[N], bu2[N], gut[N];
bool v[N], co[N][N], icy[N];
vector<int> gu[N], cy[N], cy2, ans, ch[N];
vector<std::vector<int> > answer;
int f(int p) {
    if (bu[p] == p) return p;
    else return bu[p] = f(bu[p]);
}
int f2(int p) {
  if (bu2[p] == p) return p;
  else return bu2[p] = f2(bu2[p]);
}
void f_co(int p, int q) {
    co[p][q] = co[q][p] = 1;
}
int construct(std::vector<std::vector<int> > p) {
    int i, j, k, t, t1, t2, la, tcnt;
  n = p.size();
  for (i = 0; i < n; i++) {bu[i] = i; bu2[i] = i;}
  for (i = 0; i < n; i++) {
        for (j = i + 1; j < n; j++) {
 
 
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Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:66:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |   for (j = 0; j < cy[i].size(); j++) {
      |               ~~^~~~~~~~~~~~~~
supertrees.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |    for (k = j + 1; k < cy[i].size(); k++) {
      |                    ~~^~~~~~~~~~~~~~
supertrees.cpp:84:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   84 |    if (bu2[i] == bu2[j] && p[i][j] != 1 || bu2[i] != bu2[j] && p[i][j] != 2) return 0;
      |        ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
supertrees.cpp:26:18: warning: unused variable 't' [-Wunused-variable]
   26 |     int i, j, k, t, t1, t2, la, tcnt;
      |                  ^
supertrees.cpp:26:29: warning: unused variable 'la' [-Wunused-variable]
   26 |     int i, j, k, t, t1, t2, la, tcnt;
      |                             ^~

• Subtask 1: 11 / 11
• Subtask 2: 10 / 10
• Subtask 3: 19 / 19
• Subtask 4: 35 / 35
• Subtask 5: 21 / 21
• Subtask 6: 4 / 4