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Submission #383365

# Submission time Handle Problem Language Result Execution time Memory
383365 2021-03-29T18:21:50 Z tjrwodnjs999 Jakarta Skyscrapers (APIO15_skyscraper) C++11
10 / 100
 2 ms 1516 KB 
#include <bits/stdc++.h>
#define ll long long
#define x first
#define y second
using namespace std;
int n,m,B[30005],P[30005],v[30005];
queue<pair<pair<int,int>,int>> q;
vector<int> vt[30005];
bitset<30005> bit[30005];
void f(int now,int p,int cost){
    if(!v[now]){
        v[now]=1;
        for(int i:vt[now]){
            if(!bit[now][i]){
                bit[now][i]=1;
                q.push({{now,i},cost});
            }
        }
    }
    if(!bit[now][p]){
        bit[now][p]=1;
        q.push({{now,p},cost});
    }
}
int main()
{
    scanf("%d%d",&n,&m);
    for(int i=1;i<=m;i++){
        scanf("%d%d",&B[i],&P[i]);
        vt[B[i]].push_back(P[i]);
    }
    v[B[1]]=1;
    for(int i:vt[B[1]]){
        if(!bit[B[1]][1]){
            bit[B[1]][1]=1;
            q.push({{B[1],i},0});
        }
    }
    while(!q.empty()){
        int now=q.front().x.x,p=q.front().x.y,cost=q.front().y; q.pop();
        if(now==B[2]) return !printf("%d",cost);
        if(now-p>=0) f(now-p,p,cost+1);
        if(now+p<n) f(now+p,p,cost+1);
    }
    printf("-1");
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
skyscraper.cpp:29:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |         scanf("%d%d",&B[i],&P[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1004 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 1 ms 1004 KB Output is correct
5 Correct 1 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1132 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1024 KB Output is correct
2 Correct 2 ms 1004 KB Output is correct
3 Correct 2 ms 1004 KB Output is correct
4 Correct 1 ms 1004 KB Output is correct
5 Correct 1 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1132 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 1 ms 1132 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Incorrect 2 ms 1516 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1004 KB Output is correct
2 Correct 1 ms 1004 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 2 ms 1004 KB Output is correct
5 Correct 1 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1132 KB Output is correct
8 Correct 1 ms 1008 KB Output is correct
9 Correct 2 ms 1132 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Incorrect 2 ms 1516 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1004 KB Output is correct
2 Correct 2 ms 1024 KB Output is correct
3 Correct 2 ms 1004 KB Output is correct
4 Correct 2 ms 1004 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1132 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 2 ms 1132 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Incorrect 2 ms 1516 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1004 KB Output is correct
2 Correct 1 ms 1004 KB Output is correct
3 Correct 1 ms 1004 KB Output is correct
4 Correct 2 ms 1004 KB Output is correct
5 Correct 1 ms 1004 KB Output is correct
6 Correct 2 ms 1004 KB Output is correct
7 Correct 2 ms 1132 KB Output is correct
8 Correct 1 ms 1004 KB Output is correct
9 Correct 1 ms 1132 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Incorrect 2 ms 1516 KB Output isn't correct
12 Halted 0 ms 0 KB -