Submission #2121978
Source Code Expand
#include <bits/stdc++.h> #define REP(i,n) for (int i=0;i<(n);i++) #define FOR(i,s,e) for (int i=s;i<(e);i++) #define All(v) (v).begin(),(v).end() #define mp(a,b) make_pair(a,b) #define pb(a) push_back(a) using namespace std; typedef long long llint; typedef pair<int, int> P; const int MOD = (int)1e9 + 7; const int INF = 999999999; int main(){ cin.tie(0); ios::sync_with_stdio(false); int N, M; cin >> N >> M; vector<int> box(N, 1), prob(N, 0); prob[0] = 1; REP(i, M){ int x, y; cin >> x >> y; x--; y--; box[x]--; box[y]++; prob[y] = prob[x]; } int ans = 0; REP(i, N){ //cout << box[i] << " " << prob[i] << "\n"; if(box[i] != 0 && prob[i] == 1) ans++; } cout << ans << "\n"; return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - Box and Ball |
User | AokabiC |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 848 Byte |
Status | WA |
Exec Time | 18 ms |
Memory | 1024 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 400 | ||||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt, 0_02.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | WA | 1 ms | 256 KB |
1_02.txt | AC | 1 ms | 256 KB |
1_03.txt | WA | 1 ms | 256 KB |
1_04.txt | WA | 15 ms | 1024 KB |
1_05.txt | AC | 17 ms | 1024 KB |
1_06.txt | WA | 14 ms | 640 KB |
1_07.txt | AC | 16 ms | 640 KB |
1_08.txt | WA | 12 ms | 512 KB |
1_09.txt | WA | 13 ms | 896 KB |
1_10.txt | WA | 5 ms | 768 KB |
1_11.txt | WA | 7 ms | 384 KB |
1_12.txt | WA | 2 ms | 1024 KB |
1_13.txt | WA | 16 ms | 768 KB |
1_14.txt | WA | 8 ms | 384 KB |
1_15.txt | WA | 13 ms | 384 KB |
1_16.txt | WA | 2 ms | 768 KB |
1_17.txt | WA | 18 ms | 1024 KB |
1_18.txt | WA | 16 ms | 640 KB |
1_19.txt | WA | 17 ms | 512 KB |
1_20.txt | WA | 16 ms | 384 KB |
1_21.txt | WA | 14 ms | 640 KB |
1_22.txt | WA | 18 ms | 768 KB |
1_23.txt | WA | 6 ms | 768 KB |