Problem Link : http://train.usaco.org/usacoprob2?a=4Hh6zP8GJZV&S=combo
/* PROG: combo LANG: C++ */ #include <bits/stdc++.h> #define pii pair <int,int> #define sc scanf #define pf printf #define Pi 2*acos(0.0) #define ms(a,b) memset(a, b, sizeof(a)) #define pb(a) push_back(a) #define MP make_pair #define oo 1<<29 #define dd double #define ll long long #define EPS 10E-10 #define ff first #define ss second #define MAX 10000 #define CIN ios_base::sync_with_stdio(0); cin.tie(0) #define SZ(a) (int)a.size() #define getint(a) scanf("%d",&a) #define getint2(a,b) scanf("%d%d",&a,&b) #define getint3(a,b,c) scanf("%d%d%d",&a,&b,&c) #define loop(i,n) for(int i=0;i<n;i++) #define TEST_CASE(t) for(int z=1;z<=t;z++) #define PRINT_CASE printf("Case %d: ",z) #define all(a) a.begin(),a.end() #define intlim 2147483648 #define inf 1000000 #define rtintlim 46340 #define llim 9223372036854775808 #define rtllim 3037000499 #define ull unsigned long long #define I int using namespace std; int n; bool check1(int a, int b) { if(abs(a-b)<=2) return 1; if(abs(a-b)>=n-2) return 1; return 0; } bool check(int a1,int b1,int c1,int a2,int b2,int c2) { return (check1(a1,a2) && check1(b1,b2) && check1(c1,c2)); } int main() { freopen("combo.in","r",stdin); freopen("combo.out","w",stdout); int a,b,c,x,y,z; int cnt=0; cin>>n; cin>>a>>b>>c>>x>>y>>z; for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) for(int k=1;k<=n;k++) if(check(i,j,k,a,b,c)||check(i,j,k,x,y,z)) cnt++; cout<<cnt<<endl; return 0; }