Submission #1221583

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Source Code Expand

#include <stdio.h>
#include <string.h>


int N;

int main(int argc, const char * argv[]) {
    //    freopen("/Volumes/4HOPE/Dropbox/17Todai/CodeJam/R1C-2015-C/in.txt","r",stdin);
    //    freopen("/Volumes/4HOPE/Dropbox/17Todai/CodeJam/R1C-2015-C/out.txt","w",stdout);
    int a_bef;
    int a_now;
    int cnt=0;
    int upFlag=0;//1:up 0:neutral -1:down
    scanf("%d",&N);
    if(N == 1){
        printf("1\n");
        return 0;
    }
    scanf("%d",&a_bef);
    for(int k=0;k<N-1;k++){
        scanf("%d",&a_now);
        if(upFlag == 0){
            if(a_now > a_bef){
                upFlag = 1;
                cnt++;
            }
            if(a_now < a_bef){
                upFlag = -1;
                cnt++;
            }
        }else{
            if((a_now > a_bef && upFlag == -1) ||
               (a_now < a_bef && upFlag == 1)){
                upFlag = 0;
            }
        }
        a_bef = a_now;
    }
    if(upFlag == 0){
        cnt++;
    }
    printf("%d\n",cnt);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main(int, const char**)’:
./Main.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
                   ^
./Main.cpp:19:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a_bef);
                       ^
./Main.cpp:21:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a_now);
                           ^

Judge Result