Submission #245173

#	Time	Username	Problem	Language	Result	Execution time	Memory
245173		urd05	매트 (KOI15_mat)	C++14	32 / 100	31 ms	504 KiB

mat

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

struct Mat {
    int p,l,r,h,k;
};

Mat arr[3000];
bool meet[10][10];
int n,w;

bool isMeet(Mat a,Mat b) {
    if (a.p==b.p) {
        if (a.r<=b.l||b.r<=a.l) {
            return false;
        }
        return true;
    }
    else {
        if (a.h+b.h<=w) {
            return false;
        }
        if (a.r<=b.l||b.r<=a.l) {
            return false;
        }
        return true;
    }
}

long long dp[3000]; //dp[i]:start with i

long long ans(int v) {
    if (dp[v]!=-1) {
        return dp[v];
    }
    long long ret=arr[v].k;
    for(int i=0;i<n;i++) {
        if (i!=v&&arr[i].l>=arr[v].r) {
            ret=max(ret,arr[v].k+ans(i));
        }
    }
    dp[v]=ret;
    return ret;
}

int main(void) {
    scanf("%d %d",&n,&w);
    for(int i=0;i<n;i++) {
        scanf("%d %d %d %d %d",&arr[i].p,&arr[i].l,&arr[i].r,&arr[i].h,&arr[i].k);
    }
    if (n<=10) {
        long long ret=0;
        for(int i=0;i<n;i++) {
            for(int j=0;j<n;j++) {
                if (isMeet(arr[i],arr[j])) {
                    meet[i][j]=true;
                }
            }
        }
        for(int i=0;i<(1<<n);i++) {
            bool flag=true;
            for(int one=0;one<n;one++) {
                for(int two=0;two<n;two++) {
                    if (one!=two&&(i&(1<<one))!=0&&(i&(1<<two))!=0) {
                        if (meet[one][two]) {
                            flag=false;
                            break;
                        }
                    }
                }
            }
            if (!flag) {
                continue;
            }
            long long sum=0;
            for(int j=0;j<n;j++) {
                if ((i&(1<<j))!=0) {
                    sum+=arr[j].k;
                }
            }
            ret=max(ret,sum);
        }
        printf("%lld",ret);
      	return 0;
    }
    memset(dp,-1,sizeof(dp));
    long long ret=0;
    for(int i=0;i<n;i++) {
        ret=max(ret,ans(i));
    }
    printf("%lld",ret);
}

Compilation message (stderr)

mat.cpp: In function 'int main()':
mat.cpp:47:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&w);
     ~~~~~^~~~~~~~~~~~~~~
mat.cpp:49:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d %d",&arr[i].p,&arr[i].l,&arr[i].r,&arr[i].h,&arr[i].k);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 13 / 13
• Subtask 3: 0 / 25
• Subtask 4: 11 / 11
• Subtask 5: 0 / 43