oj.uz

답안 #43207

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
43207 2018-03-10T22:16:13 Z smu201111192 버스 (JOI14_bus) C++14
35 / 100
 260 ms 53600 KB 
#include <iostream>
#include <cstdio>
#include <cassert>
#include <bitset>
#include <string>
#include <sstream>
#include <algorithm>
#include <set>
#include <numeric>
#include <cmath>
#include <map>
#include <vector>
#include <queue>
#include <stack>
#include <cstring>
#include <queue>
#include <numeric>
#include <iomanip>
#define ll long long
using namespace std;
const int MAXN = 100005;
const int MAXV = 300005;
int n,m,id = 0;
map<pair<int,int>,int> dict;
pair<int,int> cv[MAXV];
vector<int> adj[MAXV];
vector<int> node[MAXN];
struct edge{
    int u,v,st,ed;
    void read(){cin>>u>>v>>st>>ed;}
}e[MAXN];
int dp[MAXV];
void addEdge(int u,int v){
    adj[u].push_back(v);
}
int go(int cur){
    int v = cv[cur].first;
    int tm = cv[cur].second;
    if(v == n) return tm;
    int &ret = dp[cur];
    if(ret != -1) return ret;
    ret = 2e9;
    for(auto x : adj[cur]){
        ret = min(ret,go(x));
    }
    return ret;
}
int main(){
    ios::sync_with_stdio(false); cin.tie(0);
    cin >> n >> m;
    node[1].push_back(0);
    for(int i = 1; i <= m; i++){
        e[i].read();
        dict[make_pair(e[i].u,e[i].st)];
        dict[make_pair(e[i].v,e[i].ed)];
        node[e[i].u].push_back(e[i].st);
        node[e[i].v].push_back(e[i].ed);
    }
    for(int i = 1; i <= n; i++) {
        sort(node[i].begin(),node[i].end());
        node[i].erase(unique(node[i].begin(),node[i].end()),node[i].end());
    }
    dict[make_pair(1,0)];
    for(auto it = dict.begin(); it!= dict.end(); it++){
        it->second = ++id;
        cv[id] = it->first;
    }
    for(int i = 1; i <= n; i++){
        for(int j = 0; j < (int)node[i].size() - 1; j++){
            int tu = node[i][j];
            int tv = node[i][j+1];
            addEdge(dict[make_pair(i,tu)],dict[make_pair(i,tv)]);
        }
    }
    for(int i = 1; i <= m; i++){
        int u = e[i].u; int v = e[i].v;
        int st = e[i].st; int ed = e[i].ed;
        adj[dict[make_pair(u,st)]].push_back(dict[make_pair(v,ed)]);
    }
    memset(dp,-1,sizeof(dp));
    int q; cin >> q;
    for(int i = 1;i <= q; i++){
        int goal; cin >> goal;
        int low = 0;
        int high = node[1].size()-1;
        int ans = -1;
        while(low <= high){
            int mid = (low+high)/2;
            int id = dict[make_pair(1,node[1][mid])];
            if(go(id) <= goal){
                ans = max(ans,node[1][mid]);
                low = mid + 1;
            }
            else high = mid - 1;
        }
        cout<<ans<<"\n";
    }
    return 0;
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 11000 KB Output is correct
2 Correct 10 ms 11104 KB Output is correct
3 Correct 10 ms 11104 KB Output is correct
4 Correct 10 ms 11212 KB Output is correct
5 Correct 10 ms 11212 KB Output is correct
6 Correct 10 ms 11212 KB Output is correct
7 Correct 10 ms 11212 KB Output is correct
8 Correct 10 ms 11212 KB Output is correct
9 Correct 10 ms 11212 KB Output is correct
10 Correct 11 ms 11212 KB Output is correct
11 Correct 13 ms 11556 KB Output is correct
12 Correct 14 ms 11556 KB Output is correct
13 Correct 13 ms 11812 KB Output is correct
14 Correct 14 ms 11812 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 11812 KB Output is correct
2 Correct 84 ms 12012 KB Output is correct
3 Correct 51 ms 12028 KB Output is correct
4 Correct 14 ms 12028 KB Output is correct
5 Correct 14 ms 12028 KB Output is correct
6 Correct 13 ms 12028 KB Output is correct
7 Correct 40 ms 12028 KB Output is correct
8 Correct 11 ms 12028 KB Output is correct
9 Correct 30 ms 12028 KB Output is correct
10 Correct 61 ms 12316 KB Output is correct
11 Correct 33 ms 12316 KB Output is correct
12 Correct 106 ms 12572 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 260 ms 53584 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 258 ms 53600 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -