Submission #425455

#	Time	Username	Problem	Language	Result	Execution time	Memory
425455		errorgorn	Journey (NOI18_journey)	C++17	100 / 100	208 ms	8908 KiB

journey

#include <cstdio>
#include <vector>
#include <utility>
using namespace std;
typedef pair<int,int> ii;
int n,m,h;
vector<ii> flight[100005];
int memo[405][100005];
inline int add(int i,int j){
    return min(i+j,500000001);
}
void print(){
    for (int x=0;x<m;x++){
        for (int y=0;y<n;y++){
            printf("%d ",memo[y][x]);
        }
        printf("\n");
    }
}
int main(){
    scanf("%d%d%d",&n,&m,&h);
    int a,b;
    for (int x=0;x<n-1;x++){
        for (int y=0;y<h;y++){
            scanf("%d%d",&a,&b);
            if (a<=x) continue;
            flight[x].push_back(ii(a,b));
        }
    }

    memo[0][0]=1;
    memo[1][0]=-1;
    for (int x=0;x<=m;x++){
        for (int y=0;y<n;y++){
            for (ii it:flight[y]){
                if (it.second+x>m) continue;
                memo[it.second+x][it.first]=add(memo[it.second+x][it.first],memo[x][y]);
            }
            memo[x+1][y]=add(memo[x+1][y],memo[x][y]);
        }
    }

    for (int x=0;x<m;x++){
        printf("%d ",memo[x][n-1]);
    }
}

Compilation message (stderr)

journey.cpp: In function 'int main()':
journey.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     scanf("%d%d%d",&n,&m,&h);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
journey.cpp:25:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |             scanf("%d%d",&a,&b);
      |             ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 23 / 23
• Subtask 3: 26 / 26
• Subtask 4: 31 / 31