Submission #45134

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
45134	2018-04-11 13:09:28	nibnalin	Three Friends (BOI14_friends)	C++17	0 / 100	76 ms	6620 KiB

friends

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <iostream>
#include <cstdio>
#include <vector>
using namespace std;
const int maxn = int(2e5)+5, MOD = int(1e9)+7, charsz = 29;
int n;
string S;
pair<int, int> st[4*maxn+10];
int modpow(int a, int b)
{
  if(!b) return 1;
  else
  {
    int res = modpow(a, b/2);
    res *= res;
    res %= MOD;
    if(b%2) res *= a%MOD;
    return res%MOD;
  }
}
pair<int, int> combine(pair<int, int> a, pair<int, int> b)
{
  pair<int, int> res = {a.first, a.second+b.second};
  res.first += (b.first%MOD*modpow(charsz, a.second)%MOD)%MOD;
  res.first %= MOD;
  return res;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

friends.cpp: In function 'int main()':
friends.cpp:56:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 35
• Subtask 2: 0 / 65