Submission #720849

#	Time	Username	Problem	Language	Result	Execution time	Memory
720849		Makarooni	Toll (BOI17_toll)	C++17	Compilation error	0 ms	0 KiB

toll

/* IN THE NAME OF GOD */
/* |\/| /-\ |\| | |\/| /-\ */

#include <bits/stdc++.h>
using namespace std;

#pragma GCC target("avx2")
#define sz(x) (int)x.size()
#define endl '\n'
#define pb push_back
#define F first
#define S second
#define mr make_pair
#define pii pair<int, int>

const int N = 5e4 + 1;
int inf = 5e8 + 1;

vector<pii> g[N];
int dis[N], qq[2][10001], ans[10001], mx[N], qqq[10001];
int Q[N][10001];
int pt[N];
int bl[N];

int main(){
	ios_base:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	int k, n, m, q;
	cin >> k >> n >> m >> q;
	int u, v, w;
	for(int i = 1; i <= m; i++){
		cin >> u >> v >> w;
		g[u].pb(mr(v, w));
	}
	int p = 0;
	for(int i = 1; i <= q; i++){
		cin >> qq[0][i] >> qq[1][i];
		if(qq[0][i] > qq[1][i]){
			ans[i] = -1;
			continue;
		}
		if(qq[0][i] == qq[1][i])
			continue;
		if(qq[0][i] / k == qq[1][i] / k){
			ans[i] = -1;
			continue;
		}
		Q[qq[0][i]][pt[qq[0][i]]] = i;
		pt[qq[0][i]]++;
		mx[qq[0][i]] = max(mx[qq[0][i]], qq[1][i]);
		if(!bl[qq[0][i]]){
			qqq[p] = qq[0][i];
			p++;
		}
		bl[qq[0][i]] = 1;
	}
	for(int i = 0; i < p; i++){
		memset(dis, 31, sizeof dis);
		u = qqq[i];
		dis[u] = 0;
		bl[u] = 1;
		for(int j = u; j < mx[u]; j++){
			for(pii l : g[j]){
					dis[l.F] = min(dis[l.F], l.S + dis[j]);
			}
		}
		for(int j = 0; j < pt[u]; j++){
			w = Q[u][j];
			v = qq[1][w];
			if(dis[v] >= inf)
				ans[w] = -1;A
			else
				ans[w] = dis[v];
		}
	}
	for(int i = 1; i <= q; i++){
		cout << ans[i] << endl;
	}
}

Compilation message (stderr)

toll.cpp: In function 'int main()':
toll.cpp:69:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   69 |    if(dis[v] >= inf)
      |    ^~
toll.cpp:70:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   70 |     ans[w] = -1;A
      |                 ^
toll.cpp:70:17: error: 'A' was not declared in this scope