Submission #18865136


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#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define FORR2(x,y,arr) for(auto& [x,y]:arr)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
template<class T> bool chmax(T &a, const T &b) { if(a<b){a=b;return 1;}return 0;}
template<class T> bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;}
//-------------------------------------------------------

int N;
int A[202020];
ll S;

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N;
	FOR(i,N) {
		cin>>A[i];
		S+=A[i];
	}
	sort(A,A+N);
	ll ret=0;
	FOR(i,N) {
		S-=A[i];
		ret+=S-1LL*A[i]*(N-1-i);	
	}
	cout<<ret<<endl;
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}

Submission Info

Submission Time
Task D - Sum of difference
User kmjp
Language C++ (GCC 9.2.1)
Score 400
Code Size 1067 Byte
Status AC
Exec Time 44 ms
Memory 4440 KB

Compile Error

./Main.cpp: In function ‘void solve()’:
./Main.cpp:21:8: warning: unused variable ‘j’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |        ^
./Main.cpp:21:10: warning: unused variable ‘k’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |          ^
./Main.cpp:21:12: warning: unused variable ‘l’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |            ^
./Main.cpp:21:14: warning: unused variable ‘r’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |              ^
./Main.cpp:21:16: warning: unused variable ‘x’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |                ^
./Main.cpp:21:18: warning: unused variable ‘y’ [-Wunused-variable]
   21 |  int i,j,k,l,r,x,y; string s;
      |                  ^
./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:6:28: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
    6 | #define FOR(x,to) for(x=0;x<(to);x++)
      |                            ^
./Main.cpp:41:38: note: in expansion of macro ‘FOR’
   41 |  FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
      |                                      ^~~

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 2
AC × 25
Set Name Test Cases
Sample sample_01.txt, sample_02.txt
All hand_01.txt, max_01.txt, max_02.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, random_16.txt, random_17.txt, random_18.txt, random_19.txt, random_20.txt, sample_01.txt, sample_02.txt
Case Name Status Exec Time Memory
hand_01.txt AC 8 ms 3656 KB
max_01.txt AC 35 ms 4296 KB
max_02.txt AC 23 ms 4288 KB
random_01.txt AC 44 ms 4296 KB
random_02.txt AC 40 ms 4400 KB
random_03.txt AC 42 ms 4368 KB
random_04.txt AC 42 ms 4288 KB
random_05.txt AC 39 ms 4440 KB
random_06.txt AC 35 ms 4400 KB
random_07.txt AC 40 ms 4364 KB
random_08.txt AC 40 ms 4364 KB
random_09.txt AC 41 ms 4392 KB
random_10.txt AC 42 ms 4392 KB
random_11.txt AC 38 ms 4396 KB
random_12.txt AC 42 ms 4388 KB
random_13.txt AC 41 ms 4408 KB
random_14.txt AC 37 ms 4332 KB
random_15.txt AC 42 ms 4368 KB
random_16.txt AC 41 ms 4400 KB
random_17.txt AC 39 ms 4396 KB
random_18.txt AC 37 ms 4280 KB
random_19.txt AC 40 ms 4296 KB
random_20.txt AC 40 ms 4356 KB
sample_01.txt AC 2 ms 3616 KB
sample_02.txt AC 2 ms 3616 KB