#include #include #include #include using namespace std; typedef long long ll; typedef pair P; typedef pair T; long long int INF = 2e18; const ll fact_table = 1200008; double Pi = 3.1415926535897932384626; priority_queue pql; priority_queue

pqp; priority_queue

bag; //big priority queue priority_queue ,greater > pqls; priority_queue ,greater

> pqps; //small priority queue //top pop ll dx[8]={1,0,-1,0,1,1,-1,-1}; ll dy[8]={0,1,0,-1,1,-1,-1,1}; char dir[] = "DRUL"; //↓,→,↑,← #define endl "\n" #ifdef ENJAPMA #undef endl #endif #define p(x) cout<=1; i--){ rfact[i-1] = rfact[i] * i; rfact[i-1] %= mod; } return;} ll c3(ll n,ll r){ return (((fact[n] * rfact[r]) % mod ) * rfact[n-r]) % mod;} bool multicase = false; ll n,m,num,a,b,c,d,e,h,q; ll w, k; ll x[500005], y[500005]; ll z[500005]; bool used[500005]; ll table[1005][105]; void solve(){ cin >> n >> m; assert(2 <= n && n <= 1000); assert(1 <= m && m <= 100); assert(n % 2 == 0); for(ll i=0;i> table[i][j]; x[j] += table[i][j]; } } for(ll i=0;i=0;i-=2){ ans += y[i] - y[i-1]; } p(ans); return; } int main(){ // init(); ios::sync_with_stdio(false); cin.tie(nullptr); ll q, testcase = 1; if(multicase){ cin >> q; }else{ q = 1; } while(q--){ // pu("Case ");pu("#");pu(testcase);pu(": "); solve(); testcase++; } // solve(); return 0; }