115 lines
2.2 KiB
C++
115 lines
2.2 KiB
C++
#include<bits/stdc++.h>
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using namespace std;
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using ll = long long;
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void solve()
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{
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int n,a,b;
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cin>>n>>a>>b;
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if(n==1)
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{
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if(a==b)
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{
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cout<<1<<endl;
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cout<<a<<":"<<b<<endl;
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return;
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}
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else
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{
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cout<<0<<endl;
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cout<<a<<":"<<b<<endl;
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}
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}
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else if(n==a+b)
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{
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cout<<0<<endl;
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for(int i=1; i<=a; ++i)
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cout<<1<<":"<<0<<endl;
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for(int i=1; i<=b; ++i)
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cout<<0<<":"<<1<<endl;
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}
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else if(n<a+b)
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{
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cout<<0<<endl;
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if(n<=b)
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{
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int ct=0;
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bool zero=1;
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if(a!=0)
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{
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cout<<a<<":"<<0<<endl;
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zero=0;
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ct++;
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}
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for(int i=ct+1; i<n; ++i)
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{
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cout<<0<<":"<<1<<endl;
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ct++;
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}
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if(zero) cout<<0<<":"<<b-ct<<endl;
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else cout<<0<<":"<<b-ct+1<<endl;
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}
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else if(n<=a)
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{
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int ct=0;
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bool zero=1;
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if(b!=0)
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{
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cout<<0<<":"<<b<<endl;
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ct++;
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zero=0;
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}
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for(int i=ct+1; i<n; ++i)
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{
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cout<<1<<":"<<0<<endl;
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ct++;
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}
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if(zero)
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cout<<a-ct<<":"<<0<<endl;
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else
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cout<<a-ct+1<<":"<<0<<endl;
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}
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else
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{
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int ct=0;
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for(int i=1; i<=a; ++i)
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{
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cout<<1<<":"<<0<<endl;
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}
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for(int i=1; i<n-a; ++i)
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{
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cout<<0<<":"<<1<<endl;
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ct++;
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}
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cout<<0<<":"<<b-ct<<endl;
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}
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}
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else
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{
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cout<<n-a-b<<endl;
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for(int i=1; i<=n-a-b; ++i)
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{
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cout<<0<<":"<<0<<endl;
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}
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for(int i=1; i<=a; ++i)
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{
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cout<<1<<":"<<0<<endl;
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}
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for(int i=1; i<=b; ++i)
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{
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cout<<0<<":"<<1<<endl;
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}
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}
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}
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int main()
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{
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ios_base::sync_with_stdio(false);
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cin.tie(nullptr);
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int TC = 1;
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//cin >> TC;
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//cin.ignore();
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while (TC--) solve();
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} |