oj.uz

Submission #623683

# Submission time Handle Problem Language Result Execution time Memory
623683 2022-08-06T09:20:05 Z inksamurai Prosjecni (COCI16_prosjecni) C++17
120 / 120
 1 ms 340 KB 
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define _3SgiE60 ios::sync_with_stdio(0),cin.tie(0)
// e

const int _n=111;

signed main(){
_3SgiE60;
	int n;
	cin>>n;
	if(n==2){
		printf("-1\n");
		return 0;
	}
	int a[_n][_n],dro[_n],dco[_n];
	if(n%2==0){
		rng(i,1,n){
			dro[i]=(i%2?1:-1)*(i+1)/2;
		}
		dro[n-1]+=1;
		dro[1]-=dro[n-1];
		int ad=dro[n-1]-dro[1]+1;
		rng(j,1,n){
			dco[j]=dco[j-1]+ad;
		}
		long long sun=1ll*ad*1ll*n*(n-1ll)/2ll;
		dco[n-1]+=(((sun/n)/ad+1)*ad-sun/n)*n;
		rep(i,n){
			rep(j,n){
				a[i][j]=dco[j]+dro[i]+2*n+1;
			}
		}
	}else{
		rep(i,n){
			rep(j,n){
				a[i][j]=i*n+j+1;
			}
		}
	}
	rep(i,n){
		rep(j,n){
			printf("%d ",a[i][j]);
		}
		puts("");
	}
}

Compilation message

prosjecni.cpp: In function 'int main()':
prosjecni.cpp:23:11: warning: 'dro[<unknown>]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   23 |   dro[n-1]+=1;
      |   ~~~~~~~~^~~

Subtask #1
120.0 / 120.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct