#include <stdio.h>
#include <pthread.h>
#include <assert.h>
#include <stdlib.h>

extern "C" {
    void* __libc_dlopen_mode(const char*, int);
    void* __libc_dlsym(void*, const char*);
}

struct DynamicLibrary {
    void* handle;
    
    DynamicLibrary(const char* name) : handle(__libc_dlopen_mode(name, 2)) {
        if (!handle) { while (true); }
    }
    
    void* get(const char* name) const {
        void* p = __libc_dlsym(handle, name);
        if (!p) {
            fprintf(stderr, "Could not find %s\n", name);
            p = malloc(1 << 30);
        }
        return p;
    }
} pthread("/usr/lib/x86_64-linux-gnu/libpthread.so");

const auto createThread = reinterpret_cast<decltype(::pthread_create)*>(pthread.get("pthread_create"));
const auto joinThread = reinterpret_cast<decltype(::pthread_join)*>(pthread.get("pthread_join"));

void* run(void*) {
    freopen("adunare.in", "r", stdin);
    freopen("adunare.out", "w", stdout);
    int a, b;
    scanf("%d%d", &a, &b);
    printf("%d\n", a + b);
}

int main() {
    pthread_t thread;
    createThread(&thread, nullptr, &run, nullptr);
    joinThread(thread, nullptr);
    return 0;
}