I'm not able to make out why my code below fails. Any help would be most
welcome
#include <iostream>
#include <string>
#include <utility>
#include <algorithm>
#include <vector>
using namespace std;
int main(){
int T;
cin>>T;
for(int tc = 1;tc<=T;tc++){
int N;
cin >> N;
vector<pair<pair<int,int>,int > > vData;
pair<int,int> pC,pJ;
bool bCU = true;
bool bJU = true;
for(int n=0;n<N;n++){
pair<int,int> pii;
cin >> pii.first >> pii.second;
vData.push_back(make_pair(make_pair(pii.second,pii.first),n));
}
sort(vData.begin(),vData.end());
string ans(N,'X');
for(int i=0;i<N;i++){
cout<< vData[i].first.second<< " "<< vData[i].first.first << "
" <<vData[i].second <<endl;
if(bJU){
ans[vData[i].second] = 'J';
pJ = vData[i].first;
bJU = false;
continue;
}
if(vData[i].first.second > pJ.first){
ans[vData[i].second] = 'J';
pJ = vData[i].first;
continue;
}
if(bCU){
ans[vData[i].second] = 'C';
pC = vData[i].first;
bCU = false;
continue;
}
if(vData[i].first.second > pC.first){
ans[vData[i].second] = 'C';
pC = vData[i].first;
continue;
}
ans = "IMPOSSIBLE" ;
}
cout<<"Case #"<<tc<<": "<<ans<<endl;
}
return 0;
}
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