#include<iostream> #include<list> #include<stdio.h> #include<map> #include<set> using namespace std; #define ull unsigned long long int #define FOR(i,n) for(int i=0;i<n;++i) #define nil 5000 #define znakow 26 int inline min(int a,int b){return a>b?b:a;} int inline max(int a,int b){return a<b?b:a;} int main(){ ios::sync_with_stdio(false); int n; cin>>n; int ones=0; FOR(i,n){ int k; cin>>k; if(k==1)++ones; } if(ones==0)cout<<"2\n"; if(ones==1)cout<<"1\n"; if(ones>=2)cout<<"0\n"; cout<<"2\n"; cout<<"1 2\n"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #include<iostream> #include<list> #include<stdio.h> #include<map> #include<set> using namespace std; #define ull unsigned long long int #define FOR(i,n) for(int i=0;i<n;++i) #define nil 5000 #define znakow 26 int inline min(int a,int b){return a>b?b:a;} int inline max(int a,int b){return a<b?b:a;} int main(){ ios::sync_with_stdio(false); int n; cin>>n; int ones=0; FOR(i,n){ int k; cin>>k; if(k==1)++ones; } if(ones==0)cout<<"2\n"; if(ones==1)cout<<"1\n"; if(ones>=2)cout<<"0\n"; cout<<"2\n"; cout<<"1 2\n"; return 0; } |