Submission #7581

#	Time	Username	Problem	Language	Result	Execution time	Memory
7581		jihoon	Friend (IOI14_friend)	C++98	Compilation error	0 ms	0 KiB

friend

#include<cstdio>
#include<algorithm>
using namespace std;
int n;
int confi[100001];
int host[100001];
int protocol[100001];
int dp[100001][2];

int main(){
    int i;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d",&confi[i]);
        dp[i][0]=confi[i];
    }
    for(i=1;i<n;i++){
        scanf("%d",&host[i]);
        scanf("%d",&protocol[i]);
    }
    for(i=n-1;i>=1;i--){
        if(protocol[i]==0){
            dp[host[i]][0]+=dp[i][1];
            dp[host[i]][1]=max(dp[host[i]][1]+dp[i][1],dp[host[i]][1]+dp[i][0]);
        }else if(protocol[i]==1){
            dp[host[i]][0]=max(dp[host[i]][0]+dp[i][0],max(dp[host[i]][0]+dp[i][1],dp[host[i]][1]+dp[i][0]));
            dp[host[i]][1]+=dp[i][1];
        }else{
            dp[host[i]][0]=max(dp[host[i]][0]+dp[i][1],dp[host[i]][1]+dp[i][0]);
            dp[host[i]][1]+=dp[i][1];
        }
    }
    printf("%d",max(dp[0][0],dp[0][1]));
}

Compilation message (stderr)

friend.cpp: In function 'int main()':
friend.cpp:12:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
friend.cpp:14:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
friend.cpp:18:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
friend.cpp:19:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
/tmp/ccr1kW58.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccRaVZZb.o:friend.cpp:(.text.startup+0x0): first defined here
/tmp/ccr1kW58.o:(.bss+0x0): multiple definition of `protocol'
/tmp/ccRaVZZb.o:(.bss+0xc3520): first defined here
/usr/bin/ld: Warning: size of symbol `protocol' changed from 400004 in /tmp/ccRaVZZb.o to 400008 in /tmp/ccr1kW58.o
/tmp/ccr1kW58.o:(.bss+0x61aa0): multiple definition of `host'
/tmp/ccRaVZZb.o:(.bss+0x124fc0): first defined here
/usr/bin/ld: Warning: size of symbol `host' changed from 400004 in /tmp/ccRaVZZb.o to 400008 in /tmp/ccr1kW58.o
/tmp/ccr1kW58.o: In function `main':
grader.cpp:(.text.startup+0xa9): undefined reference to `findSample(int, int*, int*, int*)'
collect2: ld returned 1 exit status