Submission #729377

#	Time	Username	Problem	Language	Result	Execution time	Memory
729377		pcc	Dango Maker (JOI18_dango_maker)	C++14	Compilation error	0 ms	0 KiB

dango_maker

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

#define ll long long
#define pll pair<ll,ll>
#define fs first
#define sc second
#define _all(a) a.begin(),a.end()
#define pii pair<int,int>

const int mxn = 3030;

struct Edge{
	int to;
	int cap;
	Edge(){}
	Edge(int tt,int cc){
		to = tt,cap = cc;
	}
};

vector<Edge> edges;
vector<vector<int>> paths;
vector<int> level;
string s[mxn];
int st,ed;

void addedge(int a,int b){
	paths[a].push_back(edges.size());
	edges.push_back(Edge(b,1));
	paths[b].push_back(edges.size());
	edges.push_back(Edge(a,0));
}

bool bfs(){
	queue<int> q;
	fill(level.begin(),level.end(),-1);
	level[0] = 0;
	q.push(0);
	while(!q.empty()){
		auto now = q.front();
		q.pop();
		for(auto &id:paths[now]){
			if(!edges[id].cap)continue;
			auto nxt = edges[id].to;
			if(level[nxt] == -1){
				level[nxt] = level[now]+1;
				q.push(nxt);
			}
		}
	}
	return level[ed] != -1;
}

int dfs(int now,int lim){
	if(now == ed)return lim;
	int ans = 0;
	for(auto &id:paths[now]){
		if(!edges[id].cap)continue;
		if(!lim)break;
		auto nxt = edges[id].to;
		if(level[nxt] != level[now]+1)continue;
		auto re = dfs(nxt,min(edges[id].cap,lim));
		if(re == 0)continue;
		edges[id].cap -= re;
		edges[id^1].cap += re;
		ans += re;
		lim -= re;
	}
	return ans;
}
int arr[mxn*mxn];

void solve(){
  return 0;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	solve();
}

Compilation message (stderr)

dango_maker.cpp: In function 'void solve()':
dango_maker.cpp:75:10: error: return-statement with a value, in function returning 'void' [-fpermissive]
   75 |   return 0;
      |          ^