Submission #384930

#	Time	Username	Problem	Language	Result	Execution time	Memory
384930		Ahmadsm2005	Connecting Supertrees (IOI20_supertrees)	C++14	100 / 100	265 ms	30572 KiB

supertrees

#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
int N,edges[1001][1001],GRP[1001],Z,FAIL,GRP2[1001],Z2;
vector<vector<int>>ALL;
vector<vector<int>>P;
void CONNECT2(vector<int>X){
for(int i=1;i<X.size();i++){
edges[X[i]][X[i-1]]=1,edges[X[i-1]][X[i]]=1;
}
}
void CONNECT(vector<int>X){
vector<vector<int>>CYCLE;
for(int i=0;i<X.size();i++){
vector<int>TEMP;
if(GRP2[X[i]]+1)
continue;
TEMP.push_back(X[i]);
GRP2[X[i]]=Z2;
for(int l=0;l<N;l++){
if(P[X[i]][l]==1&&X[i]!=l){
if(GRP2[l]+1){
FAIL=1;
return;
}
TEMP.push_back(l),GRP2[l]=Z2;
}
}
for(int l=0;l<TEMP.size();l++){
int CNT=0;
for(int x=0;x<TEMP.size();x++){
if(l!=x&&(P[TEMP[l]][TEMP[x]]!=1)){
FAIL=1;
return;
}
}
for(int x=0;x<N;x++)
if(P[TEMP[l]][x]==1)
CNT++;
if(CNT!=TEMP.size()){
FAIL=1;
return;
}
}
CYCLE.push_back(TEMP);
Z2++;
}
if(CYCLE.size()==2){
FAIL=1;
return;
}
for(int i=1;i<CYCLE.size();i++)
edges[CYCLE[i][0]][CYCLE[i-1][0]]=1,edges[CYCLE[i-1][0]][CYCLE[i][0]]=1;
if(CYCLE.size()>2)
edges[CYCLE.back()[0]][CYCLE[0][0]]=1,edges[CYCLE[0][0]][CYCLE.back()[0]]=1;
for(int i=0;i<CYCLE.size();i++)
CONNECT2(CYCLE[i]);
}
int construct(std::vector<std::vector<int>>p){
N=p.size();
P=p;
for(int i=0;i<N;i++)
for(int l=0;l<N;l++)
if(p[i][l]==3)
return 0;
for(int i=0;i<1001;i++)
GRP[i]=-1,GRP2[i]=-1;
for(int i=0;i<N;i++){
vector<int>TEMP;
if(GRP[i]+1)
continue;
TEMP.push_back(i);
GRP[i]=Z;
for(int l=0;l<N;l++){
if(p[i][l]&&i!=l){
if(GRP[l]+1)
return 0;
TEMP.push_back(l),GRP[l]=Z;
}
}
for(int l=0;l<TEMP.size();l++){
int CNT=0;
for(int x=0;x<TEMP.size();x++){
if(l!=x&&(!p[TEMP[l]][TEMP[x]]))
return 0;
}
for(int x=0;x<N;x++)
if(p[TEMP[l]][x])
CNT++;
if(CNT!=TEMP.size())
return 0;
}
ALL.push_back(TEMP);
Z++;
}
for(int i=0;i<ALL.size();i++)
CONNECT(ALL[i]);
vector<vector<int>>ANS;
for(int i=0;i<N;i++){
vector<int>FF;
for(int l=0;l<N;l++)
FF.push_back(edges[i][l]);
ANS.push_back(FF);
}
if(FAIL)
return 0;
build(ANS);
return 1;
}

Compilation message (stderr)

supertrees.cpp: In function 'void CONNECT2(std::vector<int>)':
supertrees.cpp:8:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 | for(int i=1;i<X.size();i++){
      |             ~^~~~~~~~~
supertrees.cpp: In function 'void CONNECT(std::vector<int>)':
supertrees.cpp:14:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 | for(int i=0;i<X.size();i++){
      |             ~^~~~~~~~~
supertrees.cpp:29:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 | for(int l=0;l<TEMP.size();l++){
      |             ~^~~~~~~~~~~~
supertrees.cpp:31:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 | for(int x=0;x<TEMP.size();x++){
      |             ~^~~~~~~~~~~~
supertrees.cpp:40:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 | if(CNT!=TEMP.size()){
      |    ~~~^~~~~~~~~~~~~
supertrees.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 | for(int i=1;i<CYCLE.size();i++)
      |             ~^~~~~~~~~~~~~
supertrees.cpp:56:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 | for(int i=0;i<CYCLE.size();i++)
      |             ~^~~~~~~~~~~~~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:81:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 | for(int l=0;l<TEMP.size();l++){
      |             ~^~~~~~~~~~~~
supertrees.cpp:83:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 | for(int x=0;x<TEMP.size();x++){
      |             ~^~~~~~~~~~~~
supertrees.cpp:90:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 | if(CNT!=TEMP.size())
      |    ~~~^~~~~~~~~~~~~
supertrees.cpp:96:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 | for(int i=0;i<ALL.size();i++)
      |             ~^~~~~~~~~~~

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