Submission #570332

#	Time	Username	Problem	Language	Result	Execution time	Memory
570332		urd05	Virus Experiment (JOI19_virus)	C++17	0 / 100	72 ms	11388 KiB

virus

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

int arr[800][800];
char str[200001];
int rdp[800][800];
int ldp[800][800];
int m,r,c;

int main() {
    scanf("%d %d %d",&m,&r,&c);
    scanf("%s",str);
    for(int i=0;i<r;i++) {
        for(int j=0;j<c;j++) {
            scanf("%d",&arr[i][j]);
        }
    }
    for(int i=m;i<m*2;i++) {
        str[i]=str[i-m];
    }
    int lmx=0;
    int rmx=0;
    int le=0;
    int ri=0;
    for(int i=0;i<m*2;i++) {
        if (str[i]=='E') {
            le++;
            ri=0;
        }
        else {
            ri++;
            le=0;
        }
        lmx=max(lmx,le);
        rmx=max(rmx,ri);
    }
    for(int i=0;i<r;i++) {
        ldp[i][0]=0;
        for(int j=1;j<c;j++) {
            if (arr[i][j-1]!=0&&arr[i][j-1]<=lmx) {
                ldp[i][j]=ldp[i][j-1];
            }
            else {
                ldp[i][j]=j;
            }
        }
        rdp[i][c-1]=c-1;
        for(int j=c-2;j>=0;j--) {
            if (arr[i][j+1]!=0&&arr[i][j+1]<=rmx) {
                rdp[i][j]=rdp[i][j+1];
            }
            else {
                rdp[i][j]=j;
            }
        }
    }
    int cnt=0;
    int ret=1e9;
    for(int i=0;i<r;i++) {
        for(int j=0;j<c;j++) {
            if (arr[i][j]!=0) {
                int val=rdp[i][j]-ldp[i][j]+1;
                if (val<ret) {
                    cnt=1;
                    ret=val;
                }
                else if (val==ret) {
                    cnt++;
                }
            }
        }
    }
    printf("%d\n%d",ret,cnt);
    return 0;
}

Compilation message (stderr)

virus.cpp: In function 'int main()':
virus.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     scanf("%d %d %d",&m,&r,&c);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~
virus.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%s",str);
      |     ~~~~~^~~~~~~~~~
virus.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |             scanf("%d",&arr[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 14
• Subtask 2: 0 / 6
• Subtask 3: 0 / 80