Submission #497885

#	Time	Username	Problem	Language	Result	Execution time	Memory
497885		couplefire	Restore Array (RMI19_restore)	C++17	100 / 100	340 ms	1048 KiB

restore

#include <bits/stdc++.h>
using namespace std;
 
const int INF = 1e9;
int n, m;
 
struct edge{
	int x, y, c;
};
 
vector <edge> v;
void add_edge(int x, int y, int c){
	v.push_back({x, y, c});
}
 
int d[5005];
queue <int> q;
bool bellman(){
	for(int i = 1; i <= n ; ++i) d[i] = INF;
	d[0] = 0;
	
	for(int i = 1; i <= n + 1 ; ++i)
		for(auto it : v) d[it.y] = min(d[it.y], d[it.x] + it.c);	
 
	for(auto it : v)
		if(d[it.y] > d[it.x] + it.c) return 0;
	
	return 1;
}
 
int main(){	
	scanf("%d%d", &n, &m);
	for(int i = 1; i <= n ; ++i){
		add_edge(i - 1, i, 1);
		add_edge(i, i - 1, 0);
	}
	
	int l, r, k, val;
	for(int i = 1; i <= m ; ++i){
		scanf("%d%d%d%d", &l, &r, &k, &val);
		++l; ++r;
		
		if(val == 1) add_edge(r, l - 1, (k - 1) - (r - l + 1));
		else add_edge(l - 1, r, (r - l + 1) - k);
	}
	
	bool ok = bellman();
	if(!ok) printf("-1");
	else{
		for(int i = 1; i <= n ; ++i)
			printf("%d ", d[i] - d[i - 1]);
	}
 	
	return 0;
}

Compilation message (stderr)

restore.cpp: In function 'int main()':
restore.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
restore.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |   scanf("%d%d%d%d", &l, &r, &k, &val);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55