제출 #828948

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
828948		Liudas	던전 (IOI21_dungeons)	C++17	24 / 100	7066 ms	318644 KiB

dungeons

#include "dungeons.h"
#include <vector>
#include <cassert>
#include <cstdio>
#include <iostream>
#include <fstream>
#include <numeric>
#include <algorithm>
using namespace std;
struct node{
    long long ws, ls, w, l, dep;
    vector<long long> child;
    vector<long long> par;
    vector<long long> cv;
};
int cas;
vector<node> tree;
void dfs(int head, int c){
    tree[head].dep = c;
    for(int i : tree[head].par){
        dfs(i, c+1);
    }
}
void init(int n, vector<int> s, vector<int> p, vector<int> w, vector<int> l){
    if(count(s.begin(), s.end(), s[0]) == n){
        cas = 1;
    }
    else{
        cas = 0;
    }
    tree.resize(n+1);
    for(int i = 0; i < n; i ++){
        tree[i].ws = s[i];
        tree[i].ls = p[i];
        tree[i].w = w[i];
        tree[i].l = l[i];
        tree[w[i]].par.push_back(i);
        tree[i].child.push_back(l[i]);   
        tree[i].cv.push_back(p[i]);   
    }
    tree[n].child.push_back(n);
    tree[n].cv.push_back(0);
    dfs(n, 0);
    for(int i = 0; i < 30; i ++){
        for(int j = 0; j <= n; j ++){
            tree[j].child.push_back(tree[tree[j].child[i]].child[i]);
            tree[j].cv.push_back(tree[tree[j].child[i]].cv[i] + tree[j].cv[i]);
        }
    }
}
long long simulate(int x, int z){
    long long ans = z;
    if(cas){
        while(x + 1 != tree.size()){
            if(ans >= tree[x].ws){
                ans += tree[x].ws * tree[x].dep;
                x = tree.size()-1;
            }
            else{
                int p = 0;
                while(tree[x].cv[p + 1] + ans < tree[x].ws && p < 25){
                    p++;
                }
                ans += tree[x].cv[p];
                x = tree[x].child[p];
            }
        }
    }
    else{
        while(x + 1 != tree.size()){
            if(ans >= tree[x].ws){
                ans += tree[x].ws;
                x = tree[x].w;
            }
            else{
                ans += tree[x].ls;
                x = tree[x].l;
            }
        } 
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

dungeons.cpp: In function 'long long int simulate(int, int)':
dungeons.cpp:54:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<node>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         while(x + 1 != tree.size()){
      |               ~~~~~~^~~~~~~~~~~~~~
dungeons.cpp:70:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<node>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         while(x + 1 != tree.size()){
      |               ~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 26
• Subtask 3: 13 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 27
• Subtask 6: 0 / 11