제출 #45557

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
45557	2018-04-15 11:31:32	IvanC	Shell (info1cup18_shell)	C++17	100 / 100	569 ms	41260 KiB

shell

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXN = 1e6 + 10;
const ll MOD = 1e9 + 7;
vector<int> grafo[MAXN],especiais;
int nivel[MAXN],grau[MAXN],N,M,P,marcado[MAXN],nivelatual,alvo;
ll dp[MAXN];
ll solve(int v){
  if(nivel[v] > nivelatual) return 0;
  if(nivel[v] == nivelatual && v != alvo) return 0;
  if(dp[v] != -1) return dp[v];
  ll tot = 0;
  for(int u : grafo[v]){
    tot += solve(u);
  }
  return dp[v] = (tot % MOD);
}
int main(){
  memset(dp,-1,sizeof(dp));
  scanf("%d %d %d",&N,&M,&P);
  especiais.push_back(1);
  for(int i = 1;i<=P;i++){
    int v;
    scanf("%d",&v);
    if(v != 1) especiais.push_back(v);
  }
  if(especiais.back() != N) especiais.push_back(N);
  for(int i = 1;i<=M;i++){
    int u,v;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

shell.cpp: In function 'int main()':
shell.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0;i+1<especiais.size();i++){
                ~~~^~~~~~~~~~~~~~~~~
shell.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d",&N,&M,&P);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
shell.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&v);
   ~~~~~^~~~~~~~~
shell.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&u,&v);
   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 45 / 45
• Subtask 3: 20 / 20
• Subtask 4: 25 / 25