Submission #552226

#	Time	Username	Problem	Language	Result	Execution time	Memory
552226		PiejanVDC	Sky Walking (IOI19_walk)	C++17	Compilation error	0 ms	0 KiB

walk

#include<bits/stdc++.h>
using namespace std;
 
#include "walk.h"
 
long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
    const long long n = (long long)x.size();
    const long long m = (long long)l.size();
 
    vector<set<long long>>v(n);
 
    v[g].insert(0);
 
    set<pair<long long,pair<long long,long long>>>connected;
 
    for(long long i = 0 ; i < m ; i++) {
        for(long long ii = l[i] ; ii <= r[i] ; ii++) {
            if(ii < r[i])
                connected.insert({y[i], {ii, ii+1}});
            v[ii].insert(y[i]);
        }
    }
 
    map<pair<long long,long long>,long long>dist;
 
    priority_queue<pair<long long,pair<long long,long long>>>pq;
    pq.push({0,{s,0}});
 
    while(!pq.empty()) {
        auto node = pq.top();
        pq.pop();
        auto [i,y] = node.second;
        if(i > 0 && v[i-1].count(y) && connected.count({y, {i-1,i}})) {
            if((!dist.count({i-1,y}) || dist[{i,y}] + i - x[i-1] < dist[{i-1,y}])) {
                dist[{i-1,y}] = dist[{i,y}] + x[i] - x[i-1];
                pq.push({-dist[{i-1,y}], {i-1, y}});
            }
        }
        if(i < n-1 && v[i+1].count(y) && connected.count({y, {i,i+1}})) {
            if((!dist.count({i+1,y}) || dist[{i,y}] + x[i+1] - i < dist[{i+1,y}])) {
                dist[{i+1,y}] = dist[{i,y}] + x[i+1] - x[i];
                pq.push({-dist[{i+1,y}], {i+1, y}});
            }
        }
        for(auto it = v[i].begin() ; it != v[i].end() ; it++) {
            long long yy = *it;
            if(yy > h[i] || y > h[i])
                break;
            if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
                dist[{i,yy}] = dist[{i,y}] + abs(y - yy);
                pq.push({-dist[{i,yy}], {i, yy}});
            }
        }
    }
    if(!dist.count({g,0}))
        return -1;
    return dist[{g,0}];
}

Compilation message (stderr)

walk.cpp:49:2: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |  ^
walk.cpp:49:5: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |    ^
walk.cpp:49:8: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |      ^
walk.cpp:49:11: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |        ^
walk.cpp:49:14: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |          ^
walk.cpp:49:17: error: extended character   is not valid in an identifier
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |            ^
walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:49:2: error: '\U000000a0' was not declared in this scope
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |  ^
walk.cpp:49:40: error: expected primary-expression before ')' token
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |                                  ^
walk.cpp:49:55: error: expected primary-expression before ']' token
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |                                                 ^
walk.cpp:49:84: error: expected primary-expression before ']' token
   49 |             if(!dist.count({i,yy}) || dist[{i,y}] + abs(y - yy) < dist[{i,yy}]) {
      |                                                                              ^