Submission #2738051

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Source Code Expand

#include <bits/stdc++.h>
#include <typeinfo>
#include <cxxabi.h>
#ifdef LOCAL
#include "dbgtoki.hpp"
#define DUMP(i) dump((string)TOSTRING(i), demangle(typeid(i).name()), __LINE__ , i) 
#else
#define DUMP(i)
#endif

using namespace std;
#define TOSTRING(x) #x
#define SZ(x) (int)(x).size()
#define REP(i,n) for(int i=0;i<(n);i++)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define ALL(s) (s).begin(), (s).end()
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()) , v.end());
#define dis distance
#define so sort
#define rev reverse
#define pub push_back
#define sec second
#define fir first

typedef long long unsigned int llu;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<vector <int> > vvi;
const int EPS = 1e-9;
const int MOD = 1e9+7;


int main (){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    vi A(n);
    ll sum = 0;
    REP(i,n){
        cin >> A[i];
        sum += A[i];
    }
    ll ans = INT64_MAX;
    ll sum2 = 0;
    REP(i,n){
        sum2 += A[i];
        if(i+1 < n)ans = min(ans,abs(sum-2*sum2));
    }
    cout << ans << endl;
    return 0;
}

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