oj.uz

Submission #253852

# Submission time Handle Problem Language Result Execution time Memory
253852 2020-07-28T22:34:22 Z blacktulip Političari (COCI20_politicari) C++17
70 / 70
 42 ms 3448 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define endl "\n"
#define int long long
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 505;
const lo mod = 1000000007;

int n,m,b[li],a[li][li],k,flag,t,vis[li][li];
int cev;
string s;
vector<int> v;

main(void){
	scanf("%lld %lld",&n,&k);
	FOR{
		for(int j=1;j<=n;j++){
			scanf("%lld",&a[i][j]);
		}
	}
	if(k==1){printf("1\n");return 0;}
	int gel=1;
	int node=2;
	cev=2;
	v.pb(1);
	v.pb(2);
	while(cev<k){
		int at=node;
		if(vis[node][gel]){
			printf("%lld\n",v[vis[node][gel]+(k-vis[node][gel])%(cev-vis[node][gel])-1]);
			return 0;
		}
		vis[node][gel]=cev;
		node=a[node][gel];
		gel=at;
		cev++;
		v.pb(node);
	}
	printf("%lld\n",node);
	return 0;
}

Compilation message

politicari.cpp:30:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
politicari.cpp: In function 'int main()':
politicari.cpp:31:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld",&n,&k);
  ~~~~~^~~~~~~~~~~~~~~~~~~
politicari.cpp:34:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld",&a[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 7 ms 2048 KB Output is correct
3 Correct 20 ms 2688 KB Output is correct
4 Correct 26 ms 2956 KB Output is correct
5 Correct 31 ms 3192 KB Output is correct
6 Correct 30 ms 2944 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 3 ms 1152 KB Output is correct
9 Correct 8 ms 2048 KB Output is correct
10 Correct 24 ms 2816 KB Output is correct
11 Correct 42 ms 3448 KB Output is correct
12 Correct 33 ms 3320 KB Output is correct
13 Correct 1 ms 640 KB Output is correct
14 Correct 3 ms 1280 KB Output is correct